Chapter XXVII: Front Matter (27)

Of exciting causes, errors of diet are amongst the most constantly operative, and of these errors excess of food is doubtless the most common. The influence of this as an etiological factor in derangement of digestion can scarcely be exaggerated. In very many instances more food is taken into the stomach than is actually required to restore tissue-waste, and the effects of such excess upon the organism are as numerous as they are hurtful. Indeed, few elements of disease are more constantly operative in a great variety of ailments. In the first place, if food be introduced into the stomach beyond tissue-requirements, symptoms of indigestion at once manifest themselves. The natural balance betwixt {443} supply and demand is disturbed; the general nutrition of the body is interfered with; local disturbances of nutrition follow; and mal-products of digestion find their way into the blood. Especially is this the case when the excessive amount of food contains a disproportionate amount of nitrogenous matter. All proteid principles require a considerable amount of chemical alteration before they are fitted for the metabolic changes of the organism; the processes of assimilative conversion are more complex than those undergone by fats and amyloids; and it follows that there is proportional danger of disturbance of these processes from overwork. Moreover, if nitrogenous food is in excess of tissue-requirement, it undergoes certain oxidation changes in the blood without becoming previously woven into tissue, with resulting compounds which become positive poisons in the economy. The kidneys and skin are largely concerned in the elimination of these compounds, and the frequency with which these organs become diseased is largely due, no doubt, to the excessive use of unassimilated nitrogenous food. Then, again, if food be introduced in excess of the digestive capacity, the undigested portion acts directly upon the stomach as a foreign body, and in undergoing decomposition and putrefying changes frets and irritates the mucous membrane. It can scarcely be a matter of doubt that large groups of diseases have for their principal causes excess of alimentation beyond the actual requirements of the system. All such patients suffer from symptoms of catarrhal indigestion, such as gastric uneasiness, headache, vertigo, a general feeling of lassitude, constipation, and high-colored urine with abundant urates, together with varied skin eruptions. Such cases are greatly relieved by reducing the amount of food taken, especially nitrogenous food, and by a systematic and somewhat prolonged course of purgative mineral waters. Europe is especially rich in these springs. The waters of Carlsbad, Ems, Seltzer, Friedrichshall, and Marienbad, and many of the alkaline purgative waters of our own country, not unfrequently prove valuable to those who can afford to try them, and their value shows how often deranged primary assimilation is at the foundation of many human ailments. The absurd height to which so-called restorative medicine has attained within the last twenty years or more has contributed largely to the production of inflammatory forms of indigestion, with all the evil consequences growing out of general deranged nutrition.

The use of indigestible and unwholesome food entails somewhat the same consequences. This may consist in the use of food essentially unhealthy or indigestible, or made so by imperfect preparation (cooking, etc.). Certain substances taken as food cannot be dissolved by the gastric or intestinal secretions: the seeds, the skins, and rinds of fruit, the husks of corn and bran, and gristle and elastic tissue, as well as hairs in animal food, are thrown off as they are swallowed, and if taken in excess they mechanically irritate the gastro-intestinal mucous membrane and excite symptoms of acute dyspepsia, and not unfrequently give rise to pain of a griping character accompanied by diarrhoea. Symptoms of acute dyspepsia also frequently follow the ingestion of special kinds of food, such as mushrooms, shellfish, or indeed fish of any kind; and food not adapted to the individual organism is apt to excite dyspeptic symptoms. Appetite and digestion are also very much influenced by the life and {444} habits of the individual. The diet, for instance, of bodily labor should consist largely of digestible nitrogenous food, and meat, par excellence, should be increased in proportion as muscular exercise is increased. For all sorts of muscular laborers a mixed diet is best in which animal food enters as a prominent ingredient. Thus, it has been found, according to the researches of Chambers, that in forced military marches meat extract has greater sustaining properties than any other kind of food. But with those who do not take much outdoor exercise the error is apt to be, as already pointed out, in the direction of over-feeding. It cannot be doubted at the present time that over-eating (gluttony) is one of our popular vices. Hufeland says: "In general we find that men who live sparingly attain to the greatest age." While preventive medicine in the way of improved hygiene--better drainage, better ventilation, etc.--is contributing largely to the longevity of the race, we unfortunately encounter in more recent times an antagonizing influence in the elegant art of cookery. Every conceivable ingenuity is resorted to to tempt men to eat more than their stomachs can properly or easily digest or tissue-changes require. The injurious consequences of such over-feeding may finally correct itself by destroying the capacity of the stomach to digest the food.

But, on the other hand, in many nervous forms of dyspepsia the weak stomach is not unfrequently made weaker by severely restricted regimen, and especially is this the case with mental workers. Theoretical and fanciful considerations sometimes lead to physical starvation. This is apt to be the case with dyspeptics. Men who toil with their brain rather than their muscles, whether dyspeptic or not, require good, easily-digested mixed diet. It is a popular error to suppose that drugs can take the place of such food, especially drugs which are supposed to have a reconstructive influence over the nervous system, such as iron and phosphorus. The expression of Büchner, "No thinking without phosphorus," captivating to theoretical minds, has gained much notoriety, and has doubtless led to the excessive use of that drug in nervous forms of indigestion. There never was a period when phosphorus was so universally prescribed as the present. It enters into endless combinations with so-called nerve-tonics. Of the injurious influence of the drug in many cases of functional indigestion there can be no doubt; and the statement itself, so often quoted, that "the amount of phosphorus in the blood passing through the brain bears an exact proportion to the intensity of thought," is calculated to mislead. T. K. Chambers, author of the excellent _Manual of Diet_, makes the statement that "a captive lion, tiger, leopard, or hare assimilates and parts with a greater amount of phosphorus than a hard-thinking man; while the beaver, noted for its power of contrivance, excretes so little phosphorus that chemical analysis cannot find it in its excreta." In the wonderful adaptations and regulative mechanisms of nature we may trust largely to the natural law of supply and demand in maintaining a proper equilibrium. It may be doubted, indeed, whether we require at any time more phosphorus for brain- and nerve-tissue than can be found in such food as contains digestible phosphatic salts. The natural demand for food grows out of healthy tissue-change. An appetite to be healthy should commence in processes outside of the stomach.

Food may also be introduced into the stomach in an undigestible form {445} from defects of cookery. The process of cooking food produces certain well-known chemical changes in alimentary substances which render them more digestible than in the uncooked state. By the use of fire in cooking his food new sources of strength have been opened up to man which have doubtless contributed immeasurably to his physical development, and has led to his classification as the cooking animal. With regard to most articles the practice of cooking his food beforehand is wellnigh universal; and especially is this the case with all farinaceous articles of food. The gluten of wheat is almost indigestible in the uncooked state. By the process of cooking the starchy matter of the grain is not only liberated from its protecting envelopes, but it is converted into a gelatinous condition which readily yields to the diastasic ferments. Roberts, in his lectures on the _Digestive Ferments_, points out the fact that when men under the stress of circumstances have been compelled to subsist on uncooked grains of the cereals, they soon fell into a state of inanition and disease.

Animal diet is also more easily digested in the cooked than in the raw state. The advantage consists chiefly in the effects of heat on the connective tissue and in the separation of the muscular fibre. In this respect cooking aids the digestive process. The gastric juice cannot get at the albumen-containing fibrillæ until the connective tissue is broken up, removed, or dissolved. Hot water softens and removes this connective tissue. Hence raw meat is less easily digestible. Carnivorous animals, that get their food at long intervals, digest it slowly. By cutting, bruising, and scraping meat we to a certain extent imitate the process of cooking. In many cases, indeed, ill-nourished children and dyspeptics digest raw beef thus comminuted better than cooked, and it is a matter of observation that steamed and underdone roast meats are more digestible than when submitted to greater heat.

Some interesting observations have been made by Roberts on the effects of the digestive ferments on cooked and uncooked albuminoids. He employed in his experiments a solution of egg albumen made by mixing white of egg with nine times its volume of water. "This solution," says Roberts, "when boiled in the water-bath does not coagulate nor sensibly change its appearance, but its behavior with the digestive ferments is completely altered. In the raw state this solution is attacked very slowly by pepsin and acid, and pancreatic extract has no effect on it; but after being cooked in the water-bath the albumen is rapidly and entirely digested by artificial gastric juice, and a moiety of it is rapidly digested by pancreatic extract."

It is a mistake, however, to suppose that cooking is equally necessary for all kinds of albuminoids. The oyster, at least, is quite exceptional, for it contains a digestive ferment--the hepatic diastase--which is wholly destroyed by cooking. Milk may be indifferently used either in the cooked or uncooked state, and fruits, which owe their value chiefly to sugar, are not altered by cooking.

The object in introducing here these remarks on cooking food is to show that it forms an important integral part of the work of digestion, and has a direct bearing on the management of all forms of dyspepsia.

Haste in eating, with imperfect mastication, is a common cause of indigestion in this country. Mastication is the first step in the digestive {446} process. It is important, therefore, that we have good teeth and that we take time to thoroughly masticate our food, for by so doing we prepare it for being acted upon by the juices of the stomach. Time is also necessary in order that the salivary secretion may be incorporated with the alimentary substances. By the salivary diastase starch is converted into sugar and albuminoids are prepared for the action of the gastric juice. If these changes take place imperfectly, the stomach can scarcely regain in gastric digestion what was lost in imperfect mastication and insalivation. Haste in eating is one of the American vices. It grows out of the temperament of our people. We are jealous of lost time, and unfortunately this time is too often taken from the stomach. We bolt our food with unseemly haste, and pay the penalty in ruined stomachs. Many cases of indigestion are greatly relieved, if not permanently cured, by simply doubling or quadrupling the time occupied in eating.

Irregularity in the intervals between meals, such as taking one meal only in twenty-four hours or taking food before the preceding supply has been digested, is another fruitful source of indigestion. The digestive process, in the natural order of change, is confused; changes which should take place are delayed; and the results are such as arise from excessive eating. Moreover, the stomach lacks the rest so essential to digestion. The necessary interval, however, between meals varies with the nature of the food taken. "Between the extremes of the carnivoræ," says Ewald, "which feed once in twenty-four hours, and the herbivoræ, which never have done with the business of feeding, man holds a middle place, but not without permitting the recognition in the course of his life of a sort of transition from the herbivora to the carnivora. Infants should have the breast during the first three weeks as often as they wake; after that every two hours to the third month; then up to dentition every three hours; and later there should be five meals in twenty-four hours." But to this general statement there are, of course, many exceptions. Under certain pathological conditions food should be taken in small quantities at short intervals. This is especially the case in chronic gastric catarrh and in feeble digestion of nervous subjects. Such patients are not unfrequently improved by becoming again infants or herbivoræ. By the use of an exclusive milk diet or peptonized milk gruels, given in small quantities at comparatively short intervals of time, the stomach may be so accommodated that it will digest without discomfort a large amount of nourishment within a given time. To S. Weir Mitchell of Philadelphia we are indebted for some valuable observations bearing upon this point of forced alimentation.

To the causes of indigestion already alluded to may be added the habit of spirit-drinking, especially the habit of taking alcohol undiluted on an empty stomach, which rarely fails after a time to engender dyspeptic symptoms. It is a prominent factor in the production of chronic gastric catarrh--a condition more frequently present in painful indigestion than any that have been named. It is one of the most common diseases met with in practice. Indeed, all causes already alluded to involve, sooner or later, if they are constantly operative, irritative and catarrhal conditions of the mucous membrane of the stomach, so that we find it difficult at times--indeed impossible--to separate purely functional from subacute inflammatory forms of dyspepsia. Practically, we simply study the {447} subject in the relative degrees of prominence of the one condition or the other.

But, in a still more comprehensive sense, indigestion is caused by disturbance of organs directly associated with the stomach in the digestive process. All organs closely associated with each other in their physiological functions are apt to become associated in morbid action. The clinical recognition of this is a matter of great importance in the management of gastric affections. And first in the order of importance in such association is the liver. So closely, indeed, are the liver and stomach functionally associated in the process of primary assimilation that they may be considered parts of the same great digestive apparatus. Hence disturbance of the liver--either in the formation of glycogen, the destruction of albuminoid matter, or the secretion of bile--is immediately communicated to the stomach. It may be difficult to say which of these separate and distinct functions of the liver is most at fault; that can only be a matter of physiological inference. In the one case, for instance, the dyspeptic may be fairly well nourished, yet his elimination may be bad. In the other there is no failure of the destructive and excreting functions, but those concerned in the assimilation of fat and peptones are disordered, so that the patient is not well nourished, so far as the fatty element is concerned. This is the more common form, and a form not unfrequently associated with pulmonary consumption. The liver finally becomes fatty--a condition usually found associated with the constitutional forms of phthisis.

The pancreas is also closely associated with the stomach, and its secretion is of essential value in the digestive process. It is to be regretted that our precise knowledge of its diseases is in such striking contrast with its importance in the animal economy, and yet it can scarcely be doubted that in dyspeptic symptoms associated with failure of digestion of starchy, albuminous, and fatty elements of food there is disorder of the secretion of the pancreas. Hence in the treatment of the early stages of pulmonary consumption and other disorders associated with deficient digestion and assimilation of fatty substances the importance of directing our attention to the condition of the liver and pancreas, as well as to the stomach.

That morbid states of the intestinal track occupy a prominent place in the etiology of dyspepsia is also a well-recognized clinical fact. Indeed, constipation of the bowels is an almost universal accompaniment of deranged digestion, and when persistent for years it is apt to lead to the most disastrous consequences. These are mainly in the direction of lessened elimination from the intestinal glandulæ. The general symptomatology of deficient excretion from these glandulæ is closely analogous to the same condition of the liver: there is impairment of the general health; the clear florid complexion disappears; the patient becomes of a greenish or sallow hue; the blood is altered in quality; fatigue is experienced after the slightest exertion; the nights are restless; and there is great tendency to mental despondency. Moreover, constipation often precedes the gastric symptoms. The diminished muscular activity of the intestinal track extends to the stomach; its movements are diminished; food is not properly mixed with the gastric juice, and by being too long retained in the stomach in a comparatively undigested state acetous fermentation in the saccharine and starchy articles of diet is set {448} up, acid eructations and a sour taste in the mouth being commonly complained of. Dyspepsia associated with this condition of the intestinal track cannot be relieved until the constipation is relieved, and by overcoming the constipation the dyspeptic symptoms often disappear.

Mention has been made of the baneful influence of certain mental states in the production of dyspeptic symptoms. But there are forms of indigestion due to local nervous disturbance existing elsewhere than in the nerve-centres. This was ascribed by the older writers to what they termed consensus nervorum, or sympathy, by which "the operation of a stimulus is not limited to the nerves immediately irritated, but is extended to distant parts in known or unknown connection with the irritated nerves." An intimate acquaintance with this law of sympathy is of the utmost importance in the study of the functional forms of dyspepsia, for no other organ of the body is subjected to such a wide range of reflected nervous disturbance as the stomach. Morbid sympathetic impressions are transmitted mainly through branches of the vaso-motor nerve of the semilunar ganglia of the abdomen, and from the pneumogastric to the stomach. Thus, a pregnant uterus not unfrequently produces very troublesome vomiting; some females suffer from nausea and indigestion during each menstrual period; and the more chronic forms of pelvic irritation, such as a flexed uterus, and endometritis, cervicitis, or tender ovary, may be the continuous exciting cause of most troublesome forms of nervous dyspepsia. There is also close sympathy of the stomach with the lungs and heart through the distribution of the pneumogastric. So also may fixed points of irritation in any part of the nervous system be reflexly transmitted to the stomach, giving rise to most pronounced symptoms of indigestion. And it is evident that in all such cases but little can be accomplished in the way of relieving the dyspeptic symptoms until the cause upon which they depend is removed. The treatment must have reference mainly to the removal of such cause.

Lastly, all the causes mentioned finally concur in producing irregularities of the mechanism of digestion; and this may be done by disturbing either the muscular movements of the stomach or in suspending or perverting the gastric solvents, or in these two conditions combined.

SYMPTOMS.--1st. Referable to the Stomach.--The symptoms which attend and indicate the presence of functional dyspepsia are such as accompany in a greater or less degree almost all cases of chronic gastritis. Clinically, so far as the direct gastric symptoms are concerned, it is difficult to separate them. The more prominent of the local symptoms are--a sense of fulness and distension after meals, discomfort during the digestive process, derangement of appetite, acid eructations, flatulence, regurgitations of food, and sometimes nausea and vomiting. There is seldom severe pain; the sensation is rather that of uneasiness. Exceptionally, however, there may be pain, which radiates from the stomach to the shoulders, and may pass down the left arm so as to simulate angina pectoris. But it may be readily distinguished from that complaint by coming on after food, and not after exertion. In other cases a sense of constriction may be accompanied by dyspnoea, arising from impeded movements of the diaphragm from being pushed upward by the distended stomach, or there may be heartburn, with an ill-defined sense of burning felt in the epigastrium; {449} but thirst, so frequently present in chronic gastritis, is, as a rule, absent in functional dyspepsia. These symptoms are manifested in varying degrees of prominence in individual cases, and some of them are rarely found present. Thus, nausea and vomiting are not characteristic features of the chronic forms of functional dyspepsia, and as a rule epigastric tenderness is entirely absent. In markedly hysterical subjects or in persons whose nervous system has been unduly excited by alcohol there may be shrinking from the slightest touch upon pressure; but in these cases the tenderness is not confined to the stomach, nor is it increased by deep pressure. In some cases there is an unnatural craving for food--a symptom rarely if ever observed in structural lesions of the stomach--and now and then it happens that the appetite becomes depraved, especially with hysterical patients. They crave indigestible and unnatural substances, such as earth, chalk, and substances wholly devoid of alimentary properties. Impairment of appetite, however, is the more common feature of this form of indigestion.

Flatulence and eructations are generally complained of, the flatulence being accompanied by a painful sense of fulness, affecting in equal degree the stomach and small intestines. It is derived principally from putrefactive or fermentative changes of the ingesta, which are imperfectly elaborated in the stomach. The gases consist of carbonic acid, sulphuretted hydrogen, hydrogen, nitrogen, and the hydrocarbons, the butyric and acetic fermentations furnishing the hydrogen and carbonic acid gas. In addition to these marsh gas is formed by a special fermentation, the basis of which exists in the cellulose taken with vegetable food. In excessive meteorism from paralysis of the intestines the gas is principally nitrogen; the marsh-gas fermentation results from the ingestion of certain easily-fermentable vegetables, such as cabbage, cauliflower, etc.

In a certain proportion of cases regurgitation occurs from the stomach. The liquor regurgitated may be intensely acid from the presence of some of the fatty acids, probably butyric, lactic, or acetic. Exceptionally, it may be insipid or brackish, constituting what is known as pyrosis, or water-brash. The fluid is usually tasteless and without smell, and in reaction it is neutral to test-paper. It contains sulphocyanuret of potassium, and it has been supposed therefore to be only saliva. The quantity thrown up may vary from a spoonful to a pint or more. It affects females more than males, and especially those who subsist upon coarse and indigestible food. It is best treated by astringents--such as kino, krameria, logwood, or tannin--administered in the intervals between digestion, so that they may act directly on the mucous membrane. The oxide and nitrate of silver are thought by some to be superior to the vegetable astringents.

Cardialgia is a painful condition of the stomach, usually referred to its cardiac orifice, and is popularly known as heartburn. It is met with in both functional and organic disease of the stomach. It is very constantly present in chronic catarrhal gastritis, and evidently depends upon the presence of an acid, for it is usually promptly relieved by alkalies, such as chalk, magnesia, soda, or alkaline saline waters. Food containing much fat, starch, or sugar should be avoided.

Nausea and vomiting are only occasional symptoms of functional dyspepsia. When vomiting does occur it may take place at different times {450} and with varying degrees of severity, differing in this respect from the nausea and vomiting of subacute gastritis, which takes place, if at all, soon after the ingestion of food. The time of vomiting and the character of the matter ejected are liable to great variation in functional dyspepsia. It may be the result of direct irritation of morbidly sensitive gastric nerves, or it may be a reflex phenomenon; it may follow soon after the ingestion of food, or it may come on when the stomach is empty; the material vomited may be simply food but little altered or an alkaline ropy mucus; it may consist in the acid juices of the stomach or in a neutral watery fluid; or the ingesta may have undergone fermentative and putrefactive changes from either insufficient amount of the gastric solvent or from narrowing (constriction) of the pyloric extremity, in which case the yeast fungus (Torula cerevisiæ) or the Sarcina ventriculi may be found in great abundance in the vomited matter. Vomiting of this kind usually occurs some time after eating. The gastric juice itself checks putrefaction; so also does the admixture of bile. In the absence of these natural antiseptics fermentation takes place. But it would be erroneous to suppose that the fermentative dyspepsia is the primary disease; it is a symptom which can be permanently corrected only by correcting the condition upon which it depends.

Among the most noticeable of the phenomena referable to other organs than the stomach are those connected with the liver and the alimentary canal. The tongue in dyspeptic troubles varies much in character. In reflex sympathetic indigestion it is not unfrequently clean; in hepatic dyspepsia it is generally thickly coated with a white or yellow fur. The symptoms are such as pertain more especially to chronic gastro-duodenal catarrh, such as nausea, epigastric oppression, furred tongue, heartburn, acid eructations, flatulent distension of the stomach and bowels, unpleasant taste in the mouth, offensive breath, loaded urine, frontal headache, irritability, and hypochondriasis.

Constipation, as we have seen, is an almost universal accompaniment of functional dyspepsia, sustaining to it not unfrequently a causative relation. It is undoubtedly one of the most common of the slighter ailments of civilized life, and exerts a wide influence in deranging the general health. "It is quite extraordinary how many different derangements of health may result from imperfect action or a torpid state of the secreting and expelling structures of the large bowel. There may be violent and persistent nerve-pains, referred to the back, or hip, or groin, and certain other symptoms which lead pessimist practitioners, excelling in the discovery of neuroses, to diagnose structural changes in some part of the spinal cord or the antecedent state which is supposed to lead to them" (Beale). Pains in the loins and thighs, violent lumbar pain, and certain remediable forms of sciatica are sometimes due to imperfect excretion of the lower part of the alimentary canal. And it is even possible that a condition of hypochondria bordering on insanity may be brought about by long-continued defective action of the bowels. In exceptional cases of dyspepsia diarrhoea may be present. This is more frequently the case when indigestion is associated with a congested state of the liver, in which case the symptom should be regarded as curative. Excessive irritability of the muscular walls of the stomach, superadded to weak digestion, may also be followed by lienteric forms of diarrhoea. Undigested {451} food hastily finds its way into the intestinal track, and not unfrequently appears in the fecal evacuations.

Functional derangements of the stomach are often accompanied by pale urate deposits in the urine. It may contain an excess of phosphates, and in microscopical examination crystals of the oxalate of lime are frequently found, constituting a special affection described by Golding-Bird as oxaluria. He associated it with irritative dyspepsia, hypochondriasis, and exhaustion of nerve-power. This form of dyspepsia is best managed by the mineral, vegetable, and acid tonics, to which may be added small doses of nux vomica, with the usual adjuvants of good air and exercise, freedom from anxiety and care, cold sea-water baths, and well-selected, generous animal diet.

Another form of dyspepsia is sometimes associated with a peculiar form of dizziness--gastric vertigo. German writers speak of it as abdominal dizziness, and Trousseau calls it vertigo stomicale. It is usually an acute symptom, begins without any premonition, and is liable to be confounded with disease of the brain. It sometimes occurs soon after a meal, but more often when the stomach is empty (Trousseau). It perhaps, in a majority of cases, depends upon dyspepsia, but it has to be differentiated from organic brain disease, from cerebral anæmia, cerebral hyperæmia, the slighter forms of epilepsy, Minière's disease, and general nervous exhaustion and depression. But in many cases it will be found that treatment directed against the dyspepsia cures the vertigo.

Dyspeptic patients are also liable to skin diseases, and especially is this observed in the gastro-duodenal forms of indigestion. Disorders of the skin, such as urticaria, erythema, lichen, eczema, and other allied conditions, are well-recognized external indications at times of disordered conditions of the gastro-intestinal mucous membrane. Thus, it is a matter of common observation that the gastric symptoms increase when the eruption on the surface disappears.

The general influence of the nervous system over the function of digestion is perhaps the most remarkable feature of the disease, so that disturbed innervation becomes conspicuous in its symptomatology. The phenomenon varies in individual cases. Languor, drowsiness after taking food, depression of spirits, irritability, hypochondriasis, sleeplessness, palpitation, dry cough, dyspnoea, are all of common occurrence; and the mental disturbance--the anxiety, gloom, and sadness--is to many dyspeptics more distressing than absolute pain.

It is impossible, however, to present, in this connection, a complete clinical history of functional dyspepsia, for the reason that it is associated with so many separate and distinct affections, the dyspepsia itself being symptomatic of these affections.

PATHOLOGY.--But little is known of the pathology of the purely functional forms of dyspepsia beyond what is expressed by the terms atony and asthenia. These express simply certain states of the system with which atonic dyspepsia is so frequently found associated. Pathological anatomy has shown, however, that some cases are dependent upon, or associated with, certain appreciable alterations of the stomach, such as atrophy of the mucous membrane or fatty degeneration of its walls; and not unfrequently it is the seat of the so-called amyloid or lardaceous degeneration, although this albuminoid infiltration or cloudy {452} swelling is more frequently the accompaniment of chronic inflammatory process. But Jones and Fenwick have shown that these conditions may occur independently of inflammation. However, upon this point we are compelled to speak with caution. The boundary-line between functional and structural diseases is not always clearly defined. Functional and structural troubles of the stomach are certainly very intimately associated. Moreover, symptoms of purely functional dyspepsia are so frequently associated with the subacute forms of gastritis that the pathology of the disease becomes, from necessity, doubtful and complex. It can only be studied in connection with certain states or conditions of which functional derangement of the stomach is a symptom readily recognized during life. In the light of more advanced physiological and pathological researches we may expect the limits of purely functional dyspepsia to be much restricted.

DIAGNOSIS.--The diagnosis of atonic dyspepsia must have special reference to its etiology. It is usually a chronic disease, and has to be discriminated from subacute or chronic inflammation of the stomach. This is the more difficult because many symptoms exist in common in both varieties of indigestion. But in functional or atonic dyspepsia the symptoms are not so continuous; there is less epigastric uneasiness, less tenderness, less nausea or loathing of food, less thirst, and less acidity and heartburn, less emaciation, less cerebral and nervous disturbance, and the constitutional symptoms are also less severe. The tongue, as a rule, is not so thickly coated, is not so red or broad and flabby, the papillæ are less marked, the breath less offensive, and the urine, instead of showing a condition of lithæmia, is not unfrequently pale and sometimes neutral, depositing oxalates and phosphates, especially in feeble, broken-down conditions of the nervous system.

With other painful affections of the stomach, such as ulcer and cancer, it is not likely to be confounded, especially when in these affections pain, vomiting, and hæmatemesis are present.

TREATMENT.--The first and leading indication is to remove, as far as possible, all causes of the disease, and this requires patient research and much diagnostic skill. Suggestive hints of treatment may be found in connection with the discussion of the varied etiology of the disease. We can, in conclusion, only allude to the matter in a very general way. Special cases must furnish their own indications of treatment.

In many cases a condition of nervous asthenia will be found prominently present. A leading indication, therefore, irrespective of the special determining cause, is to improve the general health of the patient; and this is accomplished by all means which invigorate the system generally. And first in the order of importance are diet and regimen. It is evident that if a patient eat too much or too often, or if he eat indigestible or unwholesome food, or lead an indolent and luxurious life, nothing can be accomplished by way of drugs in the relief of the disease. Excessive alimentation is, as we have seen, a most prolific source of the disease. Tempted to excess by great variety and by the ingenuity of culinary refinements, the stomach is burdened beyond its capacity of digestion and beyond the actual requirements of the system; and especially is this the case with those who live sedentary, indoor lives. In all such cases it is absolutely essential that the digestive organs have rest. {453} Better even in cases of doubt reduce the diet for a time below the actual wants of the system until waste products are thoroughly removed and appetite is revived. The benefit derived in some instances from the protracted use of purgative mineral waters is largely attributable to the restricted regimen enforced and to the washing out of the system the waste products.

On the other hand, too great or too protracted abstemiousness may equally impair the digestive process. In ordinary forms of atonic dyspepsia we should seek rather, by appropriate treatment, to raise the digestive capacity to the level of digesting good, healthy, nutritious food, than to reduce the food to the low standard of feeble digestion. But it is a mistake to suppose that this can be accomplished by simply forcing food upon a stomach that lacks capacity of digestion.

As to the kind of diet, no precise rule is suited to all cases. Within certain limits individual experience must be consulted. But these experiences are not always reliable. Dyspeptic patients, more than any others, are apt to have fancies. Certain general rules, therefore, should be insisted upon. The food should be wholesome and digestible; it should be well cooked, well masticated, and taken at regular and not too long intervals. The intervals of time between meals depend upon circumstances already referred to. In some cases small quantities of easily-digested food should be taken at short intervals. In cases of feeble digestion of nervous subjects milk diluted in Seltzer water, or milk and lime-water, or peptonized milk, may be taken in liberal quantities at comparatively short intervals of time. Sometimes isinglass, arrowroot, or ground rice may be advantageously combined with the milk, to which tender, undone meats may be added.

Peptonized Food.--Recently the attention of the profession has been attracted to artificially digested food. The essential acts of digestion are known to be chemical transmutations. Albuminoid substances are changed into peptones and starchy matters are changed into dextrin and sugar. To Roberts, in his excellent lectures delivered in the Lumleian course before the Royal College of Physicians of London in 1880, we are indebted for valuable information on the digestive ferments and in the preparation and use of artificially-digested food; and from these lectures we shall derive most of the information we possess at present. It has been demonstrated that an extract of the stomach or pancreas, in water, has to a certain extent the same powers as the natural secretions of these organs. Hence, says Roberts, it is possible for us to subject articles of food beforehand to complete or partial digestion. Heat approximatively accomplishes the same thing. In the practice of cookery we have, as it were, a foreshadowing of this art of artificial digestion. Heat and digestive ferments alike aid gastric digestion. In case of the lower animals the whole process has to be accomplished by the labor of their own digestive organs.

Artificially digested food may be prepared in two ways--either by following the gastric method with pepsin and hydrochloric acid, or by following the intestinal method and using extract of pancreas. Both of these plans have had special advocates. Roberts claims that the latter yields by far the better results. "The pancreas not only acts upon albuminous substances, but also upon starch. Pepsin, on the other hand, is {454} quite inert in regard to starch. Moreover, the products of artificial digestion with pepsin and acid are much less agreeable to the taste and smell than those produced by pancreatic extract." The pancreas of the pig, according to Roberts, yields the most active preparation, but the pancreas of the ox or the sheep may be employed. The pancreas of the calf is not active on starchy materials. A very active extract of pancreas is now prepared, and is easily obtainable, with directions for making peptonized milk, milk gruel, milk punch, soups, jellies, blanc-manges, beef-tea, enemata, etc. It is important to remember that peptonized foods do not keep well, especially in warm weather. If a quantity sufficient for twenty-four hours be prepared at any one time, the quantity which remains over twelve hours should be reboiled before using. Food thus peptonized is indicated in feeble conditions of digestion and when the derangement of digestion results from causes pertaining to the condition of the stomach itself--_i.e._ catarrhal forms of dyspepsia.

As a rule, the food should be such as will require the least possible exertion on the part of the stomach. Raw vegetables should be forbidden; pastries, fried dishes, and all rich and greasy compounds should be eschewed; and whatever food be taken should be eaten slowly and well masticated. Many patients digest animal better than vegetable food. Tender brown meats, plainly but well cooked, such as beef, mutton, and game, are to be preferred. Lightly-cooked mutton is more digestible than beef, pork, or lamb, and roast beef is more digestible than boiled. Pork and veal and salted and preserved meats are comparatively indigestible. Bread should never be eaten hot or fresh--better be slightly stale--and bread made from the whole meal is better than that made from the mere starchy part of the grain. Milk and eggs and well-boiled rice are of special value.

But to all these general dietetic rules there may be exceptions growing out of the peculiarities of individual cases. These should be carefully studied. The aged, for obvious reasons, require less food than the young; the middle-aged, inclined to obesity and troubled with feeble digestion, should avoid potatoes, sweets, and fatty substances and spirituous liquors; persons suffering from functional derangements of the liver should be put, for a time, on the most restricted regimen; while, on the contrary, the illy fed and badly-nourished require the most nutritious food that can be digested with comfort to the patient.

The general regimen should be tonic and invigorating. The patient should have the benefit of the best possible hygiene. Under this head may be mentioned suitable clothing, fresh air, moderate exercise, sunlight, baths, rest, regular hours, and the abandonment of all bad habits. No single measure has such marked influence on the digestive powers of the stomach as systematic, well-regulated muscular exercise in the open air, and especially if the exercise be accompanied by a cheerful mental state. For this reason outdoor sports are of benefit. Hunting, fishing, boating, are known to excite the keenest appetite for food, and the stomach will digest substances that would distress it under other circumstances. Exhaustion, however, is to be carefully avoided. Horseback exercise is a remedy of much value, especially in the hepatic forms of indigestion.

The mental and moral treatment of the purely functional forms of {455} indigestion are amongst the most powerful means we possess. As an etiological factor certain morbid mental states rank first, as we have seen, in the order of importance. Grief, despondency, and despair are effectual barriers to digestion, and in a less degree mental worry seriously interferes with the process. It is a matter of prime importance, therefore, that the patient's mind be pleasantly occupied, that he should be free from all care and mental worry, and that he especially be kept from dwelling, if possible, upon his own bodily ailments. This is often best accomplished by travel, when practicable, in foreign countries, where everything will be novel and new and calculated to lead him away from himself. Get him to travel, says Watson, in search of his health, and the chances are in favor of his finding it. We have the authority of Sir James Johnson also for saying that no case of purely functional dyspepsia can resist a pedestrian tour over the Alps.

We come now to discuss the medical treatment of dyspepsia, which, though not unimportant, is subordinate to the general hygienic measures already referred to. General hints of treatment have been made in connection with special causes mentioned in the text. We seek, in a general way, by therapeutic measures--

1st. To stimulate the secreting and muscular coats of the stomach;

2d. To supply materials in which it is supposed the gastric juice is defective;

3d. To lessen abnormal irritability;

4th. To combat special symptoms or conditions which may hinder the digestive process.

To meet these indications innumerable remedies have been recommended, but they are of benefit only as they counteract the conditions upon which the dyspepsia depends. For loss of appetite, if there are no contraindications to their use, the vegetable bitters are often useful, such as quassia, gentian, and columbo. Of these columbo is the simplest of its class, but none more generally useful than mistura gentianæ with soda. The Hydrastis canadensis has also peculiar claims as a bitter stomachic. It, perhaps more than any of the bitters, promotes gastric secretion in feeble digestion, and has at the same time peculiar salutary effects on the enfeebled condition of the chronically inflamed gastric mucous membrane. It is supposed also to have a stimulating effect on the pancreatic secretion. It may be given in the form of a fluid extract combined with glycerin and small doses of nux vomica.

Among the specific stimulating nerve-tonics, nux vomica, or its alkaloid, strychnia, deserves special mention. In small tonic doses it is specially indicated in conditions of general nervous prostration associated with a tendency to hypochondriasis. In such cases we frequently observe pale urine, containing an excess of the phosphates. The mineral acids are valuable additions to the bitter tonics in all broken-down conditions of the nervous system. In administering nux vomica care should be taken as to limitation of time and dose. The excessive or prolonged use of the drug is apt to produce serious general nervous disturbance, the secondary condition being often the opposite to that for which it was prescribed. Temporary saccharine diabetes is not unfrequently one of the results.

In atony of the mucous membrane, with morbid sensibility and slow {456} digestion, ipecacuanha is a remedy of much value. It was first brought into prominent notice in connection with gastric affections by Budd, since which time it has been more or less used by the profession. In torpid, slow digestion, with depraved or lessened gastric secretion, it is of undoubted value. It should be given on an empty stomach at least half an hour before meals. The dose should be short of producing nausea. We may commence with two to four drops of the tincture or wine of ipecac, and gradually increase until we find the point of tolerance; or it may be given in the form of pill in doses of a quarter or a half grain before meals, combining it with rhubarb in three- or four-grain doses. Ipecacuanha may be administered at the same time we are giving the mineral acids, or mineral acids with pepsin.

Adjuvants to Digestion.--In atony of the stomach the gastric mucous membrane responds feebly to the stimulus of food. There is failure in both muscular movement and gastric secretion, with slowness of digestion as a result. To meet this condition we seek to increase the digestive power by the addition of certain principles natural to the digestive process--viz. the mineral acids, pepsin, and pancreatin. Of these acids, the hydrochloric should be preferred, because it is the natural acid of the gastric juice. Lactic, nitro-hydrochloric, and phosphoric acids have also been used with benefit. There can be no doubt of the efficacy of either of these preparations. They are best given when the stomach is empty, so that they may directly act on the relaxed atonic mucous membrane. Half an hour before or two hours after a meal is the best time for their administration, and to be of benefit they should be administered for a length of time. From fifteen to twenty minims of the dilute hydrochloric or nitro-hydrochloric acid may be given in some bitter tincture or infusion for months. An elegant preparation may be made by adding the acid to tincture of orange-peel and syrup of lemon. Aromatic tincture, tincture of ginger, or glycerin may be added in some cases. It is important that remedies administered in gastric affections should be made pleasant as possible to the patient.

Metallic preparations are of use in some cases. If for any reason they are preferred, the perchloride of iron is one of the very best preparations. Arsenic and zinc may also be tried in small doses.

Pepsin and its Uses.--Of the efficacy of pepsin as an artificial substitute for the normal solvent of the food adverse opinions have been expressed, but in spite of the most critical scepticism as to its action its use since first introduced into medicine has steadily increased. It has been shown to be the natural constituent of the gastric juice and glands, and as a natural ferment, when combined with hydrochloric acid, it constitutes the most important solvent of the nitrogenous portions of our diet (Habershon). There is a vast number of different preparations of pepsin in the market, and some of them are doubtless of little value. We ought to be quite sure that the article is what it purports to be. The pepsina porce is the best preparation, one grain of which, says Beale, ought to thoroughly digest one hundred grains of boiled white of egg in three or four hours at a temperature of 100° F. His test as to the value of pepsin is as follows: "One hundred grains of hard-boiled white of egg, cut into thin slices, may be placed in a wide-mouthed bottle or flask with one ounce of water and twenty drops of dilute hydrochloric acid. One {457} grain of pepsin powder is to be added, and the mixture placed before a fire at a temperature of about 100° F. The flask is to be shaken from time to time. In about an hour the white of egg begins to look transparent at the edges, and in about four hours it will be completely dissolved if the pepsin is good." In cases of feeble digestion from deficiency of gastric juice pepsin is a valuable adjuvant to the digestive power, and may be given with advantage in connection with the mineral acids or with ipecacuanha or capsicum before meals.

Special Remedies.--There are certain symptoms characteristic of the different forms and complications of dyspepsia that require special remedies. Bismuth is often useful. It is especially indicated where there is a morbid painful condition of the gastric nerves. The subnitrate or carbonate of bismuth may be given in ten- or twenty-grain doses, suspended in water by means of mucilage of acacia, and flavored with ginger or peppermint. It should always be given on an empty stomach. Other elegant preparations supposed to be improvements upon these have been recommended, and may be tried.

In cases of anæmia, if there are no contraindications, iron may be tried. If digested and assimilated, it improves the blood, and this is often the first step in the direction of restoring functional activity. Of the preparations of iron, none is perhaps superior to the perchloride. The saccharo-carbonate and the ammonio-citrate are also valuable and unirritating salts of iron, and may be given with other tonics. Ferruginous mineral waters slightly charged with carbonic acid are well tolerated in small doses. The free dilution favors the action, and is frequently more acceptable to the stomach than the more concentrated forms. From one-half to one glassful may be taken at a time; and the use of iron in this form may be preceded or accompanied by the administration of small doses of quinia and of the bitter tonics. But it is a mistake to commence the treatment by the indiscriminate use of iron, quinine, and nerve-tonics. The contraindications to the use of iron are irritable and inflammatory states of the mucous membrane, or dyspepsia associated with deranged conditions of secretion, as manifested by dirty tongue and loaded urine.

When the nervous system is prominently at fault, nux vomica, arsenic, and the nitrate and oxide of silver often prove to be valuable remedies. Here also benefit may be derived from the lighter ferruginous preparations; indeed, few combinations have greater influence over the nervous system than the joint action of arsenic and iron. Much benefit may also be derived, in special cases, from methodical hydro-therapeutic treatment. If judiciously used it strengthens the nervous system, stimulates the organic functions, and increases the power of vital resistance. And in some cases of nervous dyspepsia electricity gives good results. In all cases of nervous prostration as much wholesome food should be taken as the stomach can easily digest.

In hepatic forms of indigestion there is no substitute for an occasional mercurial cathartic, for, notwithstanding adverse criticism, clinical experience has taught the great value of this drug upon the upper portion of the intestinal track. The mode of operation may be doubtful, but the result is unquestionable. In functional disturbance of the liver or morbid conditions of the upper portion of the intestinal track, as indicated {458} by the loaded tongue, sallow complexion, want of appetite, and lithæmia, no remedy will give so much relief as a few broken doses of calomel, followed by a saline aperient; or eight or ten grains of blue mass, with a grain of ipecacuanha, may be administered at bedtime, followed by a saline draught in the morning. After the bowels are thoroughly unloaded by a mercurial, great advantage may be derived from a systematic course of the aperient mineral waters--the Friedrichshall, the Hunyadi, Carlsbad, or some of the mineral waters of our own country. The hepatic form of indigestion cannot be relieved until we relieve the congested hepatic portal system, and this is best accomplished by the general line of treatment here indicated. The simple vegetable bitters, with or without alkalies, may be used at the same time or subsequent to this treatment; but they are often worse than useless until we secure freedom of abdominal circulation. The diet should be light and nourishing, and the patient should spend most of his time out of doors. Horseback exercise is peculiarly advantageous.