Chapter II: The Peculiarities of Certain Accidental Acute and Chronic Diseases (11)

Urticaria, hives, or nettlerash, is an erythematous affection characterized by the development of wheals of a whitish, pinkish, or reddish color, accompanied by stinging, pricking, and tingling sensations. The advent of the efflorescence is usually sudden; not infrequently symptoms of gastric derangement precede its appearance. The wheals are of variable size, shape, and color. Ordinarily they are of the size of a coffee-grain or bean, rounded or ovoidal in shape, and whitish, pinkish, or reddish in color. They occur isolated or in the form of patches caused by a coalescence of several lesions, and vary in elevation from half a line to several lines. Instead of the ovoidal or rounded form, the eruption may appear in streaks or irregularly-shaped patches. To the touch the lesions may be soft or firm.

The efflorescence disappears, as a rule, without leaving a trace. Pigment-stains are in some cases left which may be slow to disappear. Burning, tingling, stinging, and itching are prominent subjective symptoms. The individual lesions are fugacious, inclining to disappear at one part and to show themselves at another. They are more apt to appear on parts subjected to pressure by contact of clothes, although no region is exempt. No age is spared, but the disease, especially in its acute form, is more common in the young. Ordinarily, urticaria is an acute disorder, lasting a few hours to several days, in which time frequent exacerbations may take place. On the other hand, it may be chronic in the sense that relapses occur successively, the skin, in fact, rarely being entirely free of the lesions.

At times the wheals are peculiar as to formation or are complicated with another condition, and hence arise the so-called varieties of the disease. The most common of these is urticaria papulosa, which was formerly known as lichen urticatus. The lesions have the form of a papule with most of the characteristics of a wheal. They appear, as a rule, suddenly, and after a few hours or days gradually disappear; they rarely {598} occur in numbers, and are generally scattered over the trunk and limbs, especially over the latter. They are intensely itchy, and hence their apices are usually excoriated and covered with blood-crusts. The itching usually becomes more marked toward night. This form of the affection is observed particularly in badly-nourished or in ill-cared-for young children. The occurrence of the disease in association with purpura, or as a complication of the latter, has given rise to the names urticaria hæmorrhagica and purpura urticans or urticata. The lesion is of a mixed character--purpuric and urticarial. Sometimes the wheal formation is of such a nature as to give rise to fluid exudation, producing a bulla; hence the name urticaria bullosa. In rare instances large walnut- or even egg-sized nodes or tumors are formed, constituting urticaria tuberosa, or giant urticaria.

The causes of urticaria are numerous. Two that are well known may be classed under the heads of external and internal irritants. Under the former may be mentioned stinging nettle, jelly-fish, caterpillars, fleas, bedbugs, and mosquitoes; among the latter, whatever produces gastric and intestinal derangements. These latter are responsible for most instances of acute urticaria. With some persons indulgence in certain articles of food, as fish, oysters, clams, crabs, lobsters, pork, strawberries, and similar articles, almost invariably calls forth the efflorescence. A number of medicinal substances, such as copaiba, cubebs, turpentine, valerian, chloral, salicylic acid, iodide of potassium, quinine, and others, taken internally, may provoke an attack. Malaria, functional and organic diseases of the uterus, a weak or irritable state of the nervous system, and impaired digestion are common causes of both the acute and chronic forms of the disease. Various nervous, hemorrhagic, and rheumatic diseases are also sometimes associated with urticaria. In fact, an irritation from disease of any internal organ, functional or organic in character, may give rise to the eruption.

Anatomically, a wheal is seen to be a more or less firm elevation, consisting of a circumscribed collection of semi-fluid material exuded into the upper layers of the skin. It has its seat for the most part in the papillary layer. The vaso-motor nervous system is probably the main factor in the production of the wheal. Dilatation following a spasm of the vessels results in effusion; in consequence, the overfilled vessels of the wheal are emptied by the pressure of the exudation, and the central paleness produced, while the pressed-back blood gives rise to the red border.

The features of the disease are so characteristic that there is, as a rule, no difficulty in distinguishing it from other affections. Erythema simplex, erythema multiforme, erythema nodosum, and erysipelas are to be differentiated. Erythema simplex is a simple hyperæmia, while urticaria is a peculiar inflammatory exudation--a point sufficient to distinguish the two. The papular and tubercular forms of erythema multiforme are to be differentiated by their more persistent character, the locality affected, and the absence usually of marked itching and burning. Erythema nodosum may resemble urticaria tuberosa, but the nodes in the former are usually encountered upon the tibial surfaces, are of much longer duration, and are free from itching. It is only when several wheals coalesce, causing swelling and burning, and then only when occurring about the face, that it may be mistaken for erysipelas; but the evanescent {599} character of the eruption in urticaria, its rapid formation, the itching, and the absence of constitutional symptoms usual in erysipelas, are points of difference.

TREATMENT.--Most cases of acute urticaria may be speedily relieved. Relapses may occur, however, upon repeated exposure to the exciting cause. The prognosis of chronic urticaria, on the other hand, is not always so favorable, and will depend in a great measure upon the ability to remove or modify the predisposing condition. The first essential in the management of a case, therefore, is an investigation into its etiological cause.

In the acute disease, where, as in the majority of cases, gastric disturbance is the exciting factor, a purgative--preferably a saline--should be given. In severe cases, if food is still in the stomach, an emetic will be of service, sulphate of zinc, ipecacuanha, and mustard being the best. The diet should be of the simplest kind. Aperients are generally indicated until recovery takes place. In chronic urticaria, where faulty digestion is the exciting cause, remedies appropriate to that condition are to be prescribed. In all cases attention is to be directed to the state of the general health. If there is a suspicion of malaria, quinine and arsenic may be administered. Functional and organic affections should receive proper management, as they may prove to be the active cause of the disorder. If diuretics are called for, acetate of potassium will often best serve the purpose. The alkaline and laxative natural mineral waters are sometimes useful. In obstinate cases, especially in those in which no assignable cause can be detected, pilocarpine, atropia, tincture of belladonna, chloride of ammonium, bromide of potassium, and arsenic may be tried. Change of climate is at times advisable.

On account of the great distress usually attending the affection, local treatment is demanded in almost all cases. Baths and lotions are the most serviceable methods of applying external remedies. Sponging the surface with vinegar or alcohol, pure or diluted, may afford relief. A lotion of carbolic acid, two to four drachms to the pint of water, will frequently give prompt ease. The latter lotion may be improved by the addition of two or three ounces of alcohol and a small quantity (one to two drachms) of glycerin to the pint. A lotion of thymol, one grain to the ounce of alcohol and water, is likewise of value. Benzoic acid and borax, each five to ten grains to the ounce of water; chloral, ten to twenty grains to the ounce; dilute hydrocyanic acid, one to three drachms to the pint; and diluted ammonia-water,--may also be mentioned. Alkaline baths made with carbonate of sodium or potassium, three or six ounces to the bath, are sometimes serviceable. Starch, gelatin, and bran baths may in like manner be used; and acid baths, half an ounce of hydrochloric or nitric acid to the bath, have been recommended. Dusting-powders, especially when applied after baths, will in some cases prove acceptable.

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URTICARIA PIGMENTOSA, called also zanthelasmoidea, is an unusual form of the disease, cases of which during the past few years have been reported. It begins usually in infancy, and may continue for a period of months or years. The wheals are intensely itchy, are more or less persistent, and leave yellowish, orange-colored, greenish, or brownish {600} stains. Its nature is obscure: by some observers it is regarded as an urticaria; by others it is claimed that there is a new-growth element in the lesions. Most cases certainly show urticarial lesions and run the course of this affection. It is more than probable that the different cases reported are not examples of one disease. Treatment is, as a rule, unsatisfactory.

Dermatitis.

Dermatitis, although in its general meaning signifying any inflammation of the skin from whatever cause or character, is a term usually applied to those forms which are directly traceable to the action of irritants. Such irritants may act from without, as cold, heat, caustics, etc., or through the medium of the blood, as in the eruptions following the ingestion of certain drugs. The intensity of the inflammation varies from a simple erythematous condition to actual gangrene. Redness, heat, pain, swelling, and at times itching, the common clinical signs of inflammation, are present, but are variable as to degree. The inflammation may be confined to a small area or may be diffused, depending usually upon the cause. The forms of dermatitis are designated according to the causes which produce them.

DERMATITIS TRAUMATICA.--Under this head are included all those inflammations of the skin which are due to traumatism. Contusions and similar injuries, abrasions and inflammation from the pressure of tight-fitting garments, bandages, etc., excoriations, and the like, are common examples of this form. The excoriations from scratching in pediculosis, scabies, pruritus, eczema, and other itchy diseases are to the dermatologist the most frequent examples of traumatic dermatitis. They subside on removal of the cause, leaving often, especially if the scratching has been at all violent and the cause long continued, thickening of the skin and pigmentation, both of which, notably the latter, may be more or less permanent.

DERMATITIS VENENATA.--All inflammatory conditions of the skin due to contact with deleterious substances are classified in this group. Apart from chemical irritants, certain plants, notably those of the rhus family, are capable in some individuals of producing inflammation of the skin. The two well-known plants of this group are the poison ivy or oak and the poison sumach or dogwood. The majority of persons are not affected by these plants, but in many contact, or in some mere proximity to the plant, will be followed by a dermatitis, variable as to degree. The inflammation may simply be of an erythematous character with slight swelling, or, on the other hand, it may be vesicular, pustular, or bullous, with marked hyperæmia, oedema, and swelling. As a rule, the inflammation appears soon after exposure or contact, sometimes within a few hours; not infrequently, however, several days will elapse before the symptoms present themselves. Itching is commonly a prominent symptom, as also heat and burning.

The eruption usually begins as an erythema with heat, swelling, oedema, and itching, remaining for several days, and then subsiding, or, as is frequently the case, vesicles or even blebs are developed, and the affection then is, as a rule, slower in disappearing. Oedema and swelling may be {601} slight, or, as often occurs, so great as to cause marked temporary disfigurement. The face, hands, and genitalia are the parts generally involved, although the disease may extend to other regions, at times involving large areas or even the greater portion of the whole surface. The lesions, either spontaneously or through violence, rupture, and dry to crusts, and subsequently fall off, leaving erythematous spots, which in turn gradually fade. The affection runs an acute course, lasting from one to six weeks. In some cases, especially in those with a tendency to eczema, its duration may be prolonged. The poisonous principle has been found to be toxicodendric acid, and is exceedingly volatile in character.

The eruption is influenced by treatment. Bland astringent lotions or ointments are most serviceable. The fluid extract of grindelia robusta, two to four drachms to the pint of water, dabbed on frequently, or cloths wet with it kept constantly applied, will usually have a remarkably beneficial effect. Black wash, either alone or followed by the oxide-of-zinc ointment, as in acute eczema, and lead-water, are both serviceable. A saturated solution of sodium hyposulphite, a lotion of sodium bicarbonate, one of carbolic acid, one or two drachms to the pint of water, a weak ammonia lotion, and other applications of a similar nature, may also be advised, frequently with good result.

Other substances which at times act on the skin somewhat similarly to the rhus plants are the aniline dyes, mezereon, arnica, and certain other drugs, as savin, croton oil, tartar emetic, mercurials, etc.

DERMATITIS CALORICA.--Both heat and cold are capable of producing serious disturbances of the skin. The condition varies from a simple erythematous inflammation to a state of actual gangrene, depending upon the degree and duration of the cause, and to some extent upon the recuperative power of the exposed parts. Whether due to heat (dermatitis combustionis, combustio, burns) or to cold (dermatitis congelationis, congelatio, frost-bite, chilblain), the clinical symptoms are about the same. Treatment is generally of a soothing character.

In cases of dermatitis due to cold which are seen immediately after exposure, the parts should gradually be brought back to a normal temperature, at first being rubbed with snow or cold water applied. In ordinary chilblains stimulating applications are most serviceable, such as tincture of iodine and frictions with oil of turpentine. Balsam of Peru, camphor, lead plaster, carbolic acid, twenty to sixty grains to the ounce of ointment, camphor, and similar remedies may also be mentioned.

In burns where the inflammation is of a mild degree, sodium bicarbonate, either as a powder or in saturated solution, is effective; while in those of a more severe grade a solution of 2 to 5 per cent. will be of greater advantage. In burns or frost-bites in which the inflammation is vesicular, bullous, pustular, or escharotic the measures advisable in ordinary inflammation are to be employed.

DERMATITIS MEDICAMENTOSA.--Medicinal eruptions are due to the ingestion of certain drugs, some of which produce in a large proportion of individuals, sooner or later, well-defined cutaneous manifestations; on the other hand, many drugs are only exceptionally noted as giving rise to cutaneous disturbance. Of the former, the iodides and the bromides stand conspicuous; while of the latter class, arsenic and quinine may be cited. The glandular structures of the skin are frequently involved, {602} especially in the iodide and bromide eruptions, and apparently the inflammation and resulting pustules are due to the effort at elimination through these structures. In other instances, especially the erythematous and urticarial eruptions, the effects of the drug seem to be due to some action upon the nervous system.

Arsenic.--Exceptionally eruptions are seen to follow the continued administration of arsenic. They are of an erythematous type, resembling the macular syphiloderm and measles; or papular, somewhat similar to the papular manifestation of erythema multiforme. Vesicles, herpetic in character, and pustules have also been observed. An urticarial-like eruption has occasionally been noted. In several instances arsenic has seemed to hold a causative relationship to an attack of herpes zoster. Arsenical dermatitis is most frequently seen about the face, neck, and hands, and lasts usually from a few days to two weeks. Workmen in arsenic-works are occasionally observed to have a pustular, ulcerative, and even gangrenous eruption, due to the local action of the drug.

Atropia or Belladonna.--A scarlatinoid rash is a frequent result of ingestion of belladonna, even a small dose at times sufficing to provoke the eruption. It is seen most frequently in children, face, neck, and chest being usually involved. Dryness of the throat and general malaise may be present. Usually there is no febrile disturbance, and desquamation seldom if ever follows, the rash usually passing away within a few hours or days after the drug has been discontinued.

Bromides.--The eruption from the bromides is usually pustular in type, occasionally furuncular, and at times giving rise to purulent accumulations of a carbuncular character. In some individuals a single dose suffices to call out the eruption; usually, however, it is only after a few weeks' administration that the cutaneous lesions are observed. In rare instances even its prolonged use is unaccompanied by any disturbance of the skin. The face, neck, shoulders, and back are most prone to its effects. The pustules have their seat in and about the sebaceous glands. A small dose of arsenic or bitartrate of potassium with each dose of the bromide will sometimes prevent the eruption caused by the latter.

Cannabis Indica.--An eruption of a vesico-papular type, the lesions pinpoint- to pea-sized, scattered over the entire surface, accompanied with considerable pruritus, has been recorded, following within twelve hours after a full dose of the drug, and disappearing in a few days.

Chloral.--A scarlatinoid or urticarial eruption, dusky-red in color, somewhat itchy, occurring especially about the face, neck, and extremities, occasionally follows the administration of chloral. In some instances, if the drug is long continued, glandular enlargement, vesicles, petechiæ, ulceration, and sloughing, and rarely death with symptoms of purpura hæmorrhagica, result. In a few cases the drug has produced simple purpuric lesions.

Copaiba.--The copaiba eruption is well known. It may follow a single dose, or, as is more often the case, after several days' or a few weeks' use of the drug. It is maculo-papular or papular in type, itchy, and resembles urticaria and erythema multiforme. The extremities are usually invaded, although not infrequently the whole surface is attacked. A {603} scarlatinoid rash has also been observed. The disturbance usually disappears in a few days.

Cubebs.--A diffused erythematous eruption, with milletseed-sized papules, coalescent here and there, occurring over the face and trunk, and to a less extent the extremities, disappearing with furfuraceous desquamation, is occasionally observed.

Digitalis.--A few cases of scarlatinoid and papular eruptions have been recorded as following the administration of digitalis.

Iodides.--Eruptions from the ingestion of the preparations of iodine are not uncommon. They may be erythematous, papular, vesicular, pustular, bullous, or purpuric in character. The erythematous type is not uncommon, appearing in patches chiefly about the forearms, face, and neck. The papular and vesicular forms are rarer, the latter occurring usually about the chest, limbs, scalp, and scrotum. A markedly eczematous eruption, occupying the greater portion of the entire surface, with copious secretion, has been occasionally noted. A pustular eruption, acne-like in character, resembling that seen following the bromides, is the most frequent. It is seen commonly about the face, shoulders, back, and arms. Iodine has been found in the contents of the lesions. A bullous eruption, occurring chiefly about the head and neck, has also been noted. This form is rare. The lesions usually begin as small vesicles or vesico-papules, and develop to blebs, containing a serous, puriform, or sanguinolent fluid. In some cases the eruption does not go beyond the vesicular or vesico-papular formation. Purpura has also, although rarely, been observed, the lesions being small, simple in character, and occurring mainly about the legs; or exceptionally assuming a grave hemorrhagic type, which may terminate fatally. All of the eruptions of the iodides disappear rapidly after the drug has been discontinued.

Mercury.--An eruption of an erysipelatous character, beginning about the face and extending to other parts, has been occasionally noted to follow this drug. The skin is smooth, shining, red, dry, and itchy.

Opium, Morphia.--An erythematous eruption, scarlatinoid in type, favoring the chest and flexor surfaces of the limbs, with or without itching, is in some individuals caused by even the smallest dose of opium or its alkaloid morphia. It may disappear in a few days or be prolonged and followed by marked desquamation. In some persons one or two doses will give rise to intense itching without any eruption, or if the drug is continued the erythematous condition described is developed. Opium has also rarely caused profuse sweating and sudamina.

Phosphoric Acid.--An instance of a bullous eruption has been recorded as following the administration of this drug.

Quinine.--Quinine rashes are not infrequent, appearing usually first on the face and neck, and then invading other parts. The eruption may be patchy or confluent. The type is generally erythematous. Chill, nausea, and other symptoms of malaise precede its development. There may be oedema and injection of the conjunctivæ, and redness and dryness of the naso-pharyngeal passages. Itching and burning are almost constant symptoms. Desquamation, furfuraceous or lamellar, follows. Eruptions resembling urticaria and erythema multiforme have been observed. A purpuric type has also been noted.

Salicylic Acid.--Dermatitis of an erythematous and urticarial type, {604} with symptoms of general disturbance, is sometimes seen in patients taking salicylic acid or its salts. An efflorescence of vesicles and pustules about the hands and feet, with profuse sweating, has been recorded. A case in which ecchymotic patches about the back and neighboring regions appeared from the use of this drug has been reported.

Santonine.--An instance of an urticarial outbreak with oedema of the eyelids and swelling of the face has been observed following the ingestion of this drug.

Stramonium,--An erythematous efflorescence has been recorded as following this drug.

Strychnia.--A case is on record in which a rash of a scarlatinoid type followed a dose of one-twenty-fourth of a grain of strychnia.

Turpentine.--Both erythematous and papular eruptions, usually itchy, have appeared as the result of large doses of turpentine, occurring principally about the face and upper trunk, the papules being minute in character. A vesicular eruption has also been noticed somewhat similar to vesicular eczema.

DERMATITIS FACTITIA.--Feigned diseases of the skin are not uncommon. Erythema, vesicles, bullæ, and gangrene have been brought about, chiefly in hysterical females, to gain sympathy, or, as also in other individuals, for the purpose of deception, by the action of friction, acids, or strong alkalies.

Dermatitis Gangrænosa.

Dermatitis gangrænosa, or gangrene of the skin, is a rare affection. It may be idiopathic or symptomatic. As an idiopathic disease it begins usually as circular, erythematous, dark-red spots, tending to appear symmetrically, either painful and hyperæsthetic or without sensation. Malaise, fever, and symptoms of debility usually precede and accompany its development. The lesions go on to gangrene and sloughing, recovery taking place or a fatal termination gradually resulting. There may be several or as many as thirty or forty patches. The progress of the disease, whether terminating fatally or in recovery, is slow, usually of several months' duration. Gangrene of the skin as a symptomatic affection is occasionally seen in grave cerebral and spinal diseases, and also in diabetes.

Furunculus.

Furunculus, or boil, is a deep-seated, inflammatory disease, characterized by one or more variously-sized, circumscribed, rounded, more or less acuminated, firm, painful formations, usually terminating in central suppuration.

In the beginning the lesion appears as a reddish spot, small, rounded, imperfectly defined, inflammatory, and painful to the touch, having its seat in the corium; it gradually becomes larger, raised, and with marked tendency to central suppuration, usually maturing in from one to two weeks, when it appears as a painful, deep-red, rounded, pointed, inflammatory formation, varying in size from a pea to a walnut, exhibiting central suppuration, the so-called core. In some cases there is no {605} tendency to core-formation, such lesions being popularly designated blind boils.

A furuncle is usually painful, of a throbbing nature, which persists until suppuration has taken place and the contents discharged. The intensity of the inflammation gives rise to considerable areolar swelling and hyperæmia. There may be but one lesion present, or, as more frequently happens, several may exist at the same time scattered over different regions. In the latter case, after a partial or complete disappearance of the first crop, a second outbreak frequently occurs, to be followed later by a third, and so on, constituting furunculosis. The lesions are usually isolated. No region of the body is exempt; the face, neck, back, and buttocks are favorite localities. Sympathetic constitutional disturbance, more or less marked in severe cases, is usually present. Boils sometimes occur in association with eczema. In general, they are the result of a depressed state of the system. Friction, a contusion, or similar local irritation is often the exciting cause. They are met with in association with diabetes, pyæmia, uræmia, chlorosis, fevers, and like conditions. Although observed at all periods of life, they are more common during adolescence and in old age. The view has been advanced that a furuncle is due to the presence of a microbe (Torula pyogenica). According to Pasteur, this bacterium is identical with that of abscesses of the soft parts, etc.

The lesion usually has its starting-point in a sebaceous gland in the upper part of the corium, or, deeper, in a sweat-gland or hair-follicle. Beginning in a sweat-gland in the deeper structures it constitutes the so-called connective-tissue furuncle, or hydroadenitis of some authors. The core, or central suppuration, is usually made up of the tissue of the gland in which the boil had its origin, and pus, and when cast off appears as a whitish, tough, pultaceous mass. A more or less permanent cicatrix usually results. There is only one affection with which a furuncle is likely to be confounded--namely, carbuncle. In this latter, however, the lesion is considerably larger, flattened instead of rounded and pointed, the pain of an intense character and in a measure independent of touch or injury. Moreover, a carbuncle has several points of suppuration, the boil having but one, and the former, moreover, is rarely multiple.

When occurring in crops, the affection is often rebellious to treatment. Both constitutional and local measures, especially the former, are demanded. Functional disorders are to be regulated, and any faulty condition of the general health corrected. Tonics, such as quinine, iron, strychnia, mineral acids, and arsenic, are not infrequently of service. The last remedy usually proves of most value in those cases in which the lesions appear in crops. The preparations of sulphur are of positive service in many cases of the disease; hyposulphite of sodium, ten or fifteen grains three or four times daily, is one of the most valuable remedies we possess, and with the same view calx sulphurata, one-tenth to one-half grain five or six times daily, may be prescribed. Alkalies, especially liquor potassæ in ten or fifteen minim doses, are not infrequently beneficial. The compound syrup of the hypophosphites may also be employed with the hope of obtaining relief. In regard to the diet, the most nutritious food, liberally partaken of, is, as a rule, to be advised. At times change of air and scene will act most happily.

{606} Concerning the local treatment, the lesion in the first stage may possibly be aborted, or at least modified in its course, by the application to the forming core of a strong solution or of a crystal of carbolic acid. This procedure is preferable to the actual cautery. If the lesion be farther advanced, a drop of carbolic acid and glycerin, equal parts, will often give instantaneous relief and arrest the progress of the boil. A few drops of a 5 per cent. carbolic-acid solution may also be injected into the apex of the boil with good results. For the same purpose painting the parts with tincture of camphor or tincture of iodine is advised. An ointment of carbolic acid--as, for example, resin cerate an ounce, carbolic acid from fifteen to thirty grains--applied as a plaster will be found useful. The application of poultices affords ease in some cases. As soon as suppuration has been fully established evacuation of the contents will shorten the course of the process. If the boil is open and discharging, boric acid in powder, freely applied, has been recommended.

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ALEPPO BOUTON, BOIL, OR EVIL, DELHI BOIL, AND BISKRA BOUTON.--The first of these diseases, the Aleppo bouton, boil, or evil, is observed at Aleppo, Bagdad, and the neighboring regions. Delhi boil is not uncommon in India, and the Biskra bouton is found in Algeria and elsewhere along the African coast. In fact, these diseases are more or less epidemic in these countries. They have been considered as allied to furuncle, but their true nature is somewhat obscure. The three affections are probably examples of the same disease, modified, it may be, by climate, habits, etc. They begin as a papule or tubercle, soon becoming a pustule, and then ulcerate, leaving a cicatrix.

Carbunculus.

Carbunculus (anthrax, carbuncle) is a firm, more or less circumscribed, painful, deep-seated inflammation of the skin and subcutaneous structures, variable as to size, terminating in a slough. General malaise, slight fever, and chilliness precede and usher in the disease. Locally, there appears at first a more or less circumscribed, circular redness, with swelling, tenderness, and pain. Soon a phlegmonous inflammation develops, the surface at times showing vesiculation, the lesion involving an area several inches in diameter and of considerable depth. The progress of the disease is not uniform. At the end of a week or two suppuration is fully established, the first signs of this process appearing about the hair-follicles. The tissues are now soft and boggy; the skin becomes gangrenous, breaking down at numerous points, disclosing centres of suppuration, giving the lesion a cribriform appearance. Finally, the whole mass sloughs away either as an entirety or in portions, and results in an open, deep ulcer with hard and raised edges, which gradually granulates and heals, leaving a pigmented cicatrix. The area involved varies, and may be extensive, sometimes as much as six or eight inches in diameter. The favorite localities for its development are the nape of the neck, shoulders, back, and buttocks. As a rule, the process ends in three to six weeks. Usually only one lesion exists. When there are several or where they follow each other in succession, the general condition is apt to {607} become markedly depressed, and even a fatal result is not at all uncommon.

The causes which give rise to the affection are similar to those which predispose to furuncle. It is generally observed in those whose health is impaired or broken down. It is more common in men, and is usually encountered in those past middle age. The inflammation starts simultaneously at numerous points, usually from the hair-follicles, sweat and sebaceous glands, extends in all directions, and eventually terminates in gangrene of the whole area. The inflammatory centres break down rapidly, from each of which the collected pus finds its way to the surface, thus producing the cribriform appearance. According to Warren, the pus ascends by way of the columnæ adiposæ to the hair-follicles, and thence to the surface. The process may involve fascia, muscles, and even periosteum and bone. The disease is to be distinguished from furuncle by its greater size, flatness, and the multiple points of suppuration. From erysipelas, to which in the beginning it may have some resemblance, it is to be differentiated by the hardness, painfulness, and circumscribed character of the lesion. It is also to be distinguished from malignant pustule. It is always to be looked upon as a serious affection, especially when occurring in those past the age of fifty or sixty and in those in a debilitated condition. Carbuncle when occurring about the face terminates in a large proportion of the cases fatally.

The treatment is both local and general. The local measures are in the main the same as advised for furuncle. In the early stages the actual cautery may arrest the process. Injections of from eight to twelve drops of a 5 or 10 per cent. solution of carbolic acid will be found valuable, often affording speedy relief. Frequently-repeated paintings with tincture of iodine in the early stage may prove of service. Poultices are of value, and will often diminish the tension and the pain. A dressing of white lead, laid on thick, is highly spoken of by Milton and other English observers. When the purulent collections have broken through the skin the application of a cupping-glass to draw out the pus has been advised. The wound should be dressed with carbolized oil. The use of the moist-sponge dressing, with the view of absorbing the pus, as recommended by McClellan, may be advised. Compression may also be resorted to with good results. The weight of authority is against the practice of incision, although in some cases it is to be recommended, the operation being preceded by hypodermic injections of cocaine. The general treatment should be of a tonic character. Iron--preferably the tincture of the chloride--and quinine in large doses are to be advised. A liberal diet of nourishing food, with a moderate amount of stimulants, is indicated in almost every case.

Herpes Simplex.

Herpes simplex is an acute, non-contagious, inflammatory disease, characterized by the formation of pinhead- to pea-sized vesicles arranged in groups and occurring for the most part about the face and genitalia. Malaise and pyrexia in severe cases may precede the eruption. Usually, however, the efflorescence appears without any systemic disturbance. The lesions {608} are rarely numerous, and appear in the form of one or more clusters. Sense of heat in the part usually signalizes the outbreak. The vesicles show no tendency to rupture. The contents are at first clear, but later become cloudy or puriform, and dry to yellowish or brownish crusts, which subsequently fall off, leaving the skin normal. If broken or rubbed, a superficial excoriation results. The affection is acute, ordinarily running its course, if unirritated, in a week or ten days. It is liable to recur from time to time. Occurring about the face, it is designated herpes facialis. It is usually seen about the lips (herpes labialis), frequently about the alæ of the nose, and occasionally on other regions of the face. The mucous membrane of the mouth may also be invaded. The lesions may remain discrete or may coalesce, forming small blebs.

When the affection shows itself upon the genitalia, it is termed herpes progenitalis; and when on the prepuce, a common site, herpes præputialis. In the female, in whom it occurs here much less frequently, the labia majora and labia minora, as well as the skin about the vulva, are the parts usually invaded. It is seen most commonly in the young and middle-aged. Burning, slight itching, sometimes darting pain, and more or less oedema, may be present. As a rule, the lesions are not numerous, the average number being five or six. They incline to group, and ordinarily but one group is seen. Unless irritated they run the same favorable course as when on other regions. If, however, as often happens, especially when occurring about the inner surface of the prepuce or the glans, or on the inner surface of the labia, the vesicles break down and excoriations resembling ulcers result. The disease is even more prone to recur than when on other parts.

Herpes of the face is often observed in association with lung and febrile diseases. Malaria is sometimes the cause, and digestive and nervous disorders frequently predispose to it. Herpes of the genitalia, it is stated, is seen most frequently in those who have previously had gonorrhoea, chancroid, or chancre, especially the first. It may be that, occurring in such persons, it excites solicitude, and hence medical relief is sought, and the relative frequency of such causes unduly increased. A long prepuce is a predisposing factor.

The characters of the eruption, as it occurs about the face, are so well marked as to preclude an error in diagnosis. About the genitalia, however, the lesions may become abraded or irritated, and may simulate chancroids. The history, course, and character of the two affections should in doubtful cases be carefully considered before expressing a positive opinion.

In herpes facialis, flexible collodion, camphorated cold cream, or the lotion of zinc sulphate and potassium sulphide (see treatment of acne for formula) may be prescribed. In herpes progenitalis cleanliness is of great importance. Liquor gutta-perchæ, a paste composed of equal parts of mucilage of acacia, glycerin, and oxide of zinc, lotions of sulphate of zinc, a few grains to the ounce, and of ammonia-water, may be prescribed. A saturated solution of boric acid and a dressing of borated absorbent cotton are likewise useful, while in some cases dusting the parts with calomel will prove beneficial. Where the affection recurs, if the prepuce is long, circumcision may afford future immunity.

{609} Herpes Iris.

Herpes iris is an acute non-contagious disease, consisting of one or more groups of inflammatory vesicles or blebs, arranged usually in the form of more or less complete concentric rings, the whole efflorescence being somewhat variegated in color.

The eruption most frequently appears on the backs of the hands and feet, especially the former. It begins as a simple papule or vesicle, which soon disappears, a ring of discrete or confluent vesicles now appearing around the periphery. The process may be arrested at this stage, the lesions soon undergoing involution, or still another ring may form. The vesicles may be discrete or confluent, but usually they coalesce, forming small or large blebs. The number of groups or patches in most cases is not large, three or four usually being present at one period; but sometimes as many as a dozen or more exist. The eruption is usually symmetrical. The difference in the age of the several rings that go to form a single patch gives rise to the variegated colors which characterize the disease. In size the vesicles vary from a pinhead to a pea, and the patches from a fraction of an inch to several inches in diameter. They contain a yellowish, clear, or puriform fluid which rapidly dries to crusts. New patches, as a rule, continue to appear in crops for a few weeks, when the process gradually subsides, leaving slight pigmentation, which soon fades away. Variations in the type of the efflorescence are not uncommon. In some instances the lesions barely reach vesiculation, being rather papulo-vesicular, while in others blebs may appear at the beginning in the place of vesicles. The subjective symptoms of itching and burning are either lacking or are not marked. Malaise or slight febrile action may usher in the disease, or, as is usually the case, constitutional disturbance is not observed. The affection is comparatively rare. Recurrences may take place, usually at intervals of a year or more.

It is seen chiefly in spring and autumn, and is met with in both sexes, but is more common in children and young persons. Its nature is obscure. It is probably due to the same causes that are responsible for erythema multiforme, a disease to which it is very closely allied. The process also is intimately identical with that affection, it being, apparently, merely an advanced stage or modification of that disease. It is to be distinguished from ringworm, erythema multiforme, herpes zoster, pemphigus, and dermatitis herpetiformis. In ringworm the process is more superficial, and usually is less inflammatory, the papules or vesico-papules being scarcely distinguishable; in doubtful cases the microscope will decide. Vesiculation will serve to differentiate from erythema multiforme. The absence of neuralgic pain, the distribution, location, and arrangement of the vesicles, are sufficient to exclude herpes zoster. In pemphigus the size, distribution, arrangement, mode of formation, and course of the lesions are different from herpes iris.

The affection tends to spontaneous disappearance in the course of a week or two; nor does treatment seem to influence materially its course. The bowels should be opened with saline laxatives, and other symptoms treated on general principles. Tonics, especially quinine, are in some cases of value. Locally, dusting-powders, such as oxide of zinc, starch, and lycopodium, may be frequently applied. Cooling, antipruritic, or {610} astringent lotions--such, for example, as those used in acute vesicular eczema--will generally prove grateful.

Herpes Zoster.

Herpes zoster, or zoster, popularly known as shingles, is an acute, self-limited, inflammatory disease, characterized by groups of vesicles with inflammatory bases situated along or over a nerve-tract, and accompanied by more or less neuralgic pain.

As a rule, the cutaneous lesions are preceded, usually for several days, by neuralgic or burning pains in the part, and in some cases mild febrile disturbance. An inflamed state of the skin, in the form of one or several patches, is seen, which is soon followed by the formation of vesico-papules, which rapidly become distinct vesicles. They vary in size from a pinhead to a pea, are situated on inflamed bases, and are irregularly grouped. They may occur in small numbers, or, as is usual, be numerous, in which case they are crowded together. In the latter event they may coalesce here and there, forming larger lesions or irregular patches. They continue to appear for five or six days, remain stationary a short time, and then begin to subside. One or more groups may be present; usually a half dozen or more are seen in the one case. The vesicles contain a clear yellowish liquid, which gradually becomes puriform; those that appear last rarely reach full development. They show no tendency to rupture, are distended, subsequently becoming slightly umbilicated, and by the end of two weeks have gradually dried to thin yellowish or brownish crusts, which soon drop off. Except in severe cases, especially the hemorrhagic form, scarring rarely results. A tendency to group is characteristic of the eruption. The disease is acute, and runs its course usually in from ten to twenty days.

In some instances the lesions run an abortive course, barely arriving at the point of vesiculation. On the other hand, small blebs and pustules may be formed. In severe cases the vesicles may become hemorrhagic. The neuralgic pain may accompany the disease, and in severe cases, especially in persons advanced in years, may persist long after the eruption has subsided. In some cases burning is the only subjective symptom complained of. The disease is not confined to any age or sex. It is more common in the winter season. As a rule, it is limited to one side of the body. Moreover, it is rarely seen in the same individual twice. The intercostal and lumbar regions show the eruption most frequently. In zoster of the orbital region the eye becomes involved, and the disease may in some instances terminate in loss of sight, and even in destruction of the eyeball. Any nerve-tract or part of the body may be the seat of the eruption, hence the names zoster capitis, facialis, brachialis, pectoralis, etc. The disease is not uncommon.

The eruption is dependent upon an irritable and inflamed state of the ganglia or nerves--a neuritis. Hence any agent that may bring about this condition is capable of producing the eruption. Among such may be included atmospheric changes, sudden checking of the perspiration, compression, nerve-injuries, operations, and similar influences. In some instances the eruption is noted to follow the administration of arsenic. {611} The primary seat of the affection is usually in the spinal ganglia; they are found softened and altered in structure and the nerves inflamed and thickened. It may, however, have its beginning along the tract of a nerve or in the peripheral branches. In fact, it may be spinal, ganglionic, or peripheral in origin. The vesicles are found to have their seat in the lower strata of the rete. The surrounding corium and papillæ show more or less round-cell infiltration, with dilatation of the papillary blood-vessels. A perineuritis, with cell-infiltration in and about the neurilemma, is also usually observed. The vesicles contain rete-cells, pus-corpuscles, and serum.

The diagnosis is usually unattended with difficulty. The premonitory pain, the appearance of grouped vesicles upon inflammatory bases, with no tendency to rupture, and the limitation of the eruption to one side of the body, are sufficiently characteristic. The vesicles are larger than those of eczema, and lack the well-known tendency of the latter to break and discharge a gummy fluid which rapidly forms to crusts. In erysipelas the line of demarcation, the deep-reddish color, and the constitutional symptoms will serve to differentiate the diseases. It is to be distinguished from simple herpes by its location, number of groups, unilateral distribution, and absence of relapses. The prognosis is favorable, as the eruption usually disappears at the end of two or three weeks; severe cases, however, may last a month or more. When involving the eye, the possibility of its destroying the same, and even of a fatal result, is to be kept in mind. In elderly subjects the neuralgic symptoms are apt to prove persistent.

Treatment is mainly expectant. The disease is self-limited, and hence severe measures are to be avoided. Internal treatment has, so far as experience shows, very little influence upon its course. Phosphide of zinc, in one-third grain doses every three hours, at times seems to have a beneficial effect. Morphia, hypodermically or by the mouth, is required if the neuralgia is severe. The galvanic current, applied once or twice daily, will sometimes quiet the pain and favorably influence the course of the disease. Locally, the parts are to be protected from irritation. For this purpose dusting-powders, to which a small quantity of morphia and camphor may be added, may be employed. The parts should be further protected with a bandage. Oxide-of-zinc ointment, and anodyne ointments containing powdered opium or belladonna, may also be used. Painting the efflorescence with oil of peppermint or with solutions of menthol, thymol, or carbolic acid will be found to relieve the burning and pain; so also, flexible collodion, containing ten grains of morphia to the ounce, will sometimes afford relief. The parts subsequently may be covered with a layer of cotton batting.

Dermatitis Herpetiformis.

This disease is multiform and protean in character, consisting in the formation of herpetic, erythematous, vesicular, pustular, and bullous lesions, occurring separately or in various combinations, accompanied with itching and burning sensations and pursuing usually a chronic course with relapses.

This affection, which until recently has been confounded with other {612} cutaneous diseases, is rare, although as its peculiar features become belter known numerous cases will doubtless be reported. It was first described by one of us (Duhring) in a paper read before the American Medical Association in 1884. It is an inflammatory disease of an herpetic character, the various lesions showing more or less tendency to group. In some of its forms it bears likeness to erythema multiforme and herpes iris, while in other cases it is allied to pemphigus. It varies greatly in the degree of development. The causes are varied, though in many cases they are neurotic in their nature; thus, the disease may follow shock to the nervous system. It is also met with accompanying the parturient state. In some cases it is septicæmic in origin. It is also at times due to irregular menstruation. As to sex, while more frequent in women, it is also encountered in men. In severe cases there is more or less constitutional disturbance, consisting of malaise, slight fever, and constipation, accompanying the onset of the disease or its relapses and exacerbations. Increased heat of skin, itching, and burning are also prominent symptoms at such periods.

The disease manifests itself in the erythematous, vesicular, bullous, pustular, and multiform varieties. The erythematous variety is characterized by patches or a diffuse efflorescence of an urticarial or erythema-multiforme-like nature, the similarity to the latter process being sometimes marked. The disease may remain in this form, or, as is usually the case, may pass into other varieties, especially the vesicular. This latter is the usual form of the disease. It is characterized by variously-sized, flat or raised, irregularly-shaped or stellate, glistening vesicles, as a rule without marked areolæ. They are usually firm and distended, are often difficult to detect, and have an herpetic look, being grouped into clusters of two, three, or more. Here and there they are aggregated into patches. When in close proximity they tend to coalesce, forming large irregularly-shaped, oblong, or lobulated vesicles, or even blebs. The eruption is usually profuse. The most striking symptom is the itching, which in most cases is severe or even intense. The vesicles make their appearance, as a rule, slowly, several days or a week being required for their complete development. This variety of dermatitis herpetiformis (formerly described with the name herpes gestationis) is liable to be confounded with vesicular eczema, but the irregularity in the size and shape of the vesicles; their angular or stellate outline, giving them a puckered look; their firm, tense walls, showing no disposition to spontaneous rupture,--will all serve in the diagnosis. In some cases the constitutional disturbance and the magnitude of the eruption, as regards profusion, distribution, and multiformity, will also be apparent.

In the bullous variety the lesions are more or less typical blebs, variable as to size and shape, seated upon a slightly inflamed or non-inflammatory base. They tend to group into small clusters, in which case the skin between them will be red, as occurs in herpes zoster. Together with the blebs, vesicles and small or even minute whitish pustules will usually be found, the combination of these varied lesions being sometimes remarkable. The blebs generally rupture or are broken by injury, and become the seat of yellowish or brownish crusts. This variety of the disease is liable to be confounded with pemphigus, but differs in its marked herpetic and more inflammatory aspect.

{613} The pustular variety is generally less clearly defined than the vesicular, because the lesions are usually intermingled with vesicles, vesico-pustules, and blebs. The pustules are acuminate, rounded, or flat, are variable as to size, and are whitish or yellowish in color. The smallest are generally flat, sometimes being no larger than a pinpoint or pinhead, while those that attain the size of a pea are rounded or acuminate, and are surrounded with a marked red areola. The largest are flat, and incline to spread out and to run together, forming patches which later become covered with greenish crusts. Grouping occurs here as in the other varieties, and is sometimes peculiar in that a central pustule may be surrounded by a variable number of smaller pustules in a circinate form, as in herpes iris. This variety of the disease is the same condition described by Hebra with the title impetigo herpetiformis.

The papular manifestation is an ill-defined form of disease, consisting of small reddish, firm, more or less grouped papules, resembling in general appearance the papular lesions sometimes met with in abortive herpes zoster. They resemble at times also certain phases of relapsing chronic papular eczema. Owing to itching and scratching they are generally excoriated.

Finally, there remains to be described the multiform variety, which consists of several of the foregoing varieties occurring in combination, a phase of the disease which is not infrequent. It comprises erythematous, sometimes slightly raised, urticarial patches of variable size and shape, often marginate or confluent, and of a reddish, yellowish, or variegated color. In addition, there may be present more or less well-defined irregularly-shaped or rounded maculo-papules and flat patches of infiltration, papules, and papulo-vesicles in various stages of evolution. Vesicles, blebs, and pustules may also exist, together with pigmentation. Thus it will be noted there exists a mixture or combination of lesions, calling to mind the peculiarities of eczema, although the process is both more capricious and varied in its behavior.

It must also be stated that the disease may at any period change its type; thus the vesicular variety may exist for weeks or months, to be followed by a crop of blebs or of pustules. The mingling of several varieties at one or another period in the course of the affection is usually a marked feature. It is variable in its course, but is in most cases chronic, and not infrequently is of many years' duration. It inclines to persist and to show itself in distinct crops or attacks at irregular intervals, the patient in the mean time being comparatively free of eruption. Relapses are common. It is in most cases very rebellious to treatment. The prognosis should be guarded. The pustular and bullous varieties are the most grave, and at times may prove fatal, especially in connection with the parturient state.

Concerning the treatment, with the knowledge now at hand but little encouragement can be given. The general state of the patient should receive attention, and the cause inquired into and modified or remedied if possible. The therapeutics must be conducted on general principles. Arsenic and its preparations do not seem to be of value, at least in the cases that have fallen under our observation. Locally, the remedies most useful are those usually employed in chronic eczema and in pemphigus.

{614} Psoriasis.