Pigmentary Processes.--Friction, pressure, or scratching, if long continued, may produce extensive and permanent pigmentation. This is seen in its highest degree in itching diseases like prurigo and pityriasis. Greenhow has published instances of this kind under the name of "vagabond's disease," a disease simulating morbus addisonii, and particularly found in tramps and vagrants. In aged people this condition is the pityriasis nigra of Willan. According to Crocker in two cases reported by Thibierge, the oral mucous membrane was also stained. Carrington and Crocker both record cases of permanent pigmentation following exposure to great cold. Gautier is accredited with recording in 1890 the case of a boy of six in whom pigmented patches from sepia to almost black began to form at the age of two, and were distributed all over the body. Precocious maturity of the genital organs preceded and accompanied the pigmentation, but the hair was illy developed.

Chloasma uterinum presents some interesting anomalies. Swayne records a singular variety in a woman in whom, during the last three months of three successive pregnancies, the face, arms, hands, and legs were spotted like a leopard, and remained so until after her confinement.

Crocker speaks of a lady of thirty whose skin during each pregnancy became at first bronze, as if it had been exposed to a tropical sun, and then in spots almost black. Kaposi knew a woman with a pigmented mole two inches square on the side of the neck, which became quite black at each pregnancy, and which was the first recognizable sign of her condition. It is quite possible that the black disease of the Garo Hills in a.s.sam is due to extreme and acute development of a pernicious form of malaria. In chronic malaria the skin may be yellowish, from a chestnut-brown to a black color, after long exposure to the influence of the fever. Various fungi, such as tinea versicolor and the Mexican "Caraati," may produce discoloration on the skin.

Acanthosis Nigricans may be defined as a general pigmentation with papillary mole-like growths. In the "International Atlas of Rare Skin Diseases" there are two cases pictured, one by Politzer in a woman of sixty-two, and the other by Janovsky in a man of forty-two. The regions affected were mostly of a dirty-brown color, but in patches of a bluish-gray. The disease began suddenly in the woman, but gradually in the man. Crocker has reported a case somewhat similar to these two, under the head of general bronzing without const.i.tutional symptoms, in a Swedish sailor of twenty-two, with rapid onset of pigmentation.

Xeroderma pigmentosum, first described by Kaposi in 1870, is a very rare disease, but owing to its striking peculiarities is easily recognized. Crocker saw the first three cases in England, and describes one as a type. The patient was a girl of twelve, whose general health and nutrition were good. The disease began when she was between twelve and eighteen months old, without any premonitory symptom. The disease occupied the parts habitually uncovered in childhood. The whole of these areas was more or less densely speckled with pigmented, freckle-like spots, varying in tint from a light, raw umber to a deep sepia, and in size from a pin's head to a bean, and of a roundish and irregular shape. Interspersed among the pigment-spots, but not so numerous, were white atrophic spots, which in some parts coalesced, forming white, shining, cicatrix-like areas. The skin upon this was finely wrinkled, and either smooth or shiny, or covered with thin, white scales. On these white areas bright red spots were conspicuous, due to telangiectasis, and there were also some stellate vascular spots and strife interspersed among the pigment. Small warts were seen springing up from some of the pigment spots. These warts ulcerated and gave rise to numerous superficial ulcerations, covered with yellow crusts, irregularly scattered over the face, mostly on the right side.

The pus coming from these ulcers was apparently innocuous. The patient complained neither of itching nor of pain. Archambault has collected 60 cases, and gives a good resume to date. Amiscis reports two cases of brothers, in one of whom the disease began at eight months, and in the other at a year, and concludes that it is not a lesion due to external stimuli or known parasitic elements, but must be regarded as a specific, congenital dystrophy of the skin, of unknown pathogenesis.

However, observations have shown that it may occur at forty-three years (Riehl), and sixty-four years (Kaposi). Crocker believes that the disease is an atrophic degeneration of the skin, dependent on a primary neurosis, to which there is a congenital predisposition.

Nigrities is a name given by the older writers to certain black blotches occurring on the skin of a white person--in other words, it is a synonym of melasma. According to Rayer it is not uncommon to see the s.c.r.o.t.u.m and the skin of the p.e.n.i.s of adults almost black, so as to form a marked contrast with the p.u.b.es and the upper part of the thighs.

Haller met with a woman in whom the skin of the pubic region was as black as that of a negress. During nursing the nipples a.s.sume a deep black color which disappears after weaning. Le Cat speaks of a woman of thirty years, whose forehead a.s.sumed a dusky hue of the color of iron rust when she was pregnant about the seventh month. By degrees the whole face became black except the eyes and the edges of the lips, which retained their natural color. On some days this hue was deeper than on others; the woman being naturally of a very fair complexion had the appearance of an alabaster figure with a black marble head. Her hair, which was naturally exceedingly dark, appeared coa.r.s.er and blacker. She did not suffer from headache, and her appet.i.te was good.

After becoming black, the face was very tender to the touch. The black color disappeared two days after her accouchement, and following a profuse perspiration by which the sheets were stained black. Her child was of a natural color. In the following pregnancy, and even in the third, the same phenomenon reappeared in the course of the seventh month; in the eighth month it disappeared, but in the ninth month this woman became the subject of convulsions, of which she had one each day.

The existence of accidental nigrities rests on well-established facts which are distinctly different from the pigmentation of purpura, icterus, or that produced by metallic salts. Chomel quotes the case of a very apathic old soldier, whose skin, without any appreciable cause, became as brown as that of a negro in some parts, and a yellowish-brown in others. Rustin has published the case of a woman of seventy who became as black as a negress in a single night. Goodwin relates the case of an old maiden lady whose complexion up to the age of twenty-one was of ordinary whiteness, but then became as black as that of an African. Wells and Rayer have also published accounts of cases of accidental nigrities. One of the latter cases was a sailor of sixty-three who suffered from general nigrities, and the other was in a woman of thirty, appearing after weaning and amenorrhea.

Mitch.e.l.l Bruce has described an anomalous discoloration of the skin and mucous membranes resembling that produced by silver or cyanosis. The patient, a harness-maker of forty-seven, was affected generally over the body, but particularly in the face, hands, and feet. The conjunctival, nasal, and aural mucosa were all involved. The skin felt warm, and pressure did not influence the discoloration. The pains complained of were of an intermittent, burning, shooting character, chiefly in the epigastric and left lumbar regions. The general health was good, and motion and sensation were normal. Nothing abnormal was discovered in connection with the abdominal and thoracic examinations.

The pains and discoloration had commenced two years before his admission, since which time the skin had been deepening in tint. He remained under observation for three months without obvious change in his symptoms. There was nothing in the patient's occupation to account for the discoloration. A year and a half previously he had taken medicine for his pains, but its nature could not be discovered. He had had syphilis.

Galtier mentions congenital and bronze spots of the skin. A man born in Switzerland the latter part of the last century, calling himself Joseph Galart, attracted the attention of the curious by exhibiting himself under the name of the "Living Angel." He presented the following appearance: The skin of the whole posterior part of the trunk, from the nape of the neck to the loins, was of a bronze color. This color extended over the shoulders and the sides of the neck, and this part was covered with hairs of great fineness and growing very thick; the skin of the rest of the body was of the usual whiteness. Those parts were the darkest which were the most covered with hair; on the back there was a s.p.a.ce of an inch in diameter, which had preserved its whiteness, and where the hairs were fewer in number, darker at their bases, and surrounded by a very small black circle; the hair was thinner at the sides of the neck; there were a great many individual hairs surrounded by circles of coloring matter; but there were also many which presented nothing of this colored areola. In some places the general dark color of the skin blended with the areola surrounding the roots of the hair, so that one uniform black surface resulted. In many places the dark color changed into black. The irides were brown. The man was of very unstable character, extremely undecided in all his undertakings, and had a lively but silly expression of countenance. A distinct smell, as of mice, with a mixture of a garlicky odor, was emitted from those parts where the excessive secretion of the coloring matter took place. In those places the heat was also greater than natural. Rayer recites the case of a young man whom he saw, whose eyelids and adjacent parts of the cheeks were of a bluish tint, similar to that which is produced on the skin by the explosion of gunpowder.

Billard has published an extraordinary case of blue discoloration of the skin in a young laundress of sixteen. Her neck, face, and upper part of the chest showed a beautiful blue tint, princ.i.p.ally spreading over the forehead, the alae, and the mouth. When these parts were rubbed with a white towel the blue parts of the skin were detached on the towel, coloring it, and leaving the skin white. The girl's lips were red, the pulse was regular and natural, and her strength and appet.i.te like that of a person in health. The only morbid symptom was a dry cough, but without mucous rattle or any deficiency of the sound of the chest or alteration of the natural beat of the heart. The catamenia had never failed. She had been engaged as a laundress for the past two years. From the time she began this occupation she perceived a blueness around her eyes, which disappeared however on going into the air. The phenomenon reappeared more particularly when irons were heated by a bright charcoal fire, or when she worked in a hot and confined place.

The blueness spread, and her breast and abdomen became shaded with an azure blue, which appeared deeper or paler as the circulation was accelerated or r.e.t.a.r.ded. When the patient's face should have blushed, the face became blue instead of red. The changes exhibited were like the sudden transition of shades presented by the chameleon. The posterior part of the trunk, the axillae, the sclerotic coats of the eyes, the nails, and the skin of the head remained in their natural state and preserved their natural color. The linen of the patient was stained blue. Chemical a.n.a.lysis seemed to throw no light on this case, and the patient improved on alkaline treatment. She vomited blood, which contained sufficient of the blue matter to stain the sides of the vessel. She also stated that in hemorrhage from the nose she had seen blue drops among the drops of blood. One cannot but suspect indigo as a factor in the causation of this anomalous coloration.

Artificial discolorations of the skin are generally produced by tattooing, by silver nitrate, mercury, bis.m.u.th, or some other metallic salt.

Melasma has been designated as an accidental and temporary blackish discoloration of the skin. There are several varieties: that called Addison's disease, that due to uterine disease, etc. In this affection the skin a.s.sumes a dark and even black hue.

Leukoderma is a pathologic process, the result of which is a deficiency in the normal pigmentation of the skin, and possibly its appendages.

Its synonyms are leukopathia, vitiligo, achroma, leukasmus, and chloasma alb.u.m. In India the disease is called sufaid-korh, meaning white leprosy. It has numerous colloquial appellations, such as chumba or phoolyree (Hindoo), buras (Urdu), cabbore (Singalese), kuttam (Taneil), dhabul (Bengal). It differs from albinism in being an acquired deficiency of pigment, not universal and not affecting the eye. Albinism is congenital, and the hair and eyes are affected as well as the skin.

The disease is of universal distribution, but is naturally more noticeable in the dark-skinned races. It is much more common in this country among the negroes than is generally supposed.

The "leopard-boy of Africa," so extensively advertised by dime museums over the country, was a well-defined case of leukoderma in a young mulatto, a fitting parallel for the case of ichthyosis styled the "alligator-boy."

Figure 293 represents a family of three children, all the subjects of leukoderma. Leukoderma is more common among females. It is rarely seen in children, being particularly a disease of middle age. Bissell reports a case in an Indian ninety years of age, subsequent to an attack of rheumatism thirty years previous. It is of varying duration, nearly every case giving a different length of time. It may be a.s.sociated with most any disease, and is directly attributable to none.

In a number of cases collected rheumatism has been a marked feature. It has been noticed following typhoid fever and pregnancy.

In white persons there are spots or blotches of pale, l.u.s.treless appearance either irregular or symmetric, scattered over the body. In the negro and other dark-skinned races a mottled appearance is seen. If the process goes to completion, the whole surface changes to white. The hair, though rarely affected, may present a mottled appearance. There seems to be no const.i.tutional disturbances, no radical change in the skin, no pain--in fact, no disturbance worthy of note. The eye is not affected; but in a negro the sclerotic generally appears muddy.

It appears first in small spots, either on the lips, nose, eyelids, soles, palms, or forehead, and increases peripherally--the several spots fusing together. The skin is peculiarly thin and easily irritated. Exposure to the sun readily blisters it, and after the slightest abrasion it bleeds freely. Several cases have been reported in which the specific gravity of the urine was extremely high, due to an excess of urea. Wood calls attention to the wave-like course of leukoderma, receding on one side, increasing on the other. The fading is gradual, and the margins may be abrupt or diffuse. The mucous membranes are rosy. The functions of the swell-glands are unimpaired.

The theory of the absence of pigment causing a loss of the olfactory sense, spoken of by Wallace, is not borne out by several observations of Wood and others. Wilson says: "Leukasma is a neurosis, the result of weakened innervation of the skin, the cause being commonly referable to the organs of a.s.similation or reproduction." It is not a dermat.i.tis, as a dermat.i.tis usually causes deposition of pigment. The rays of the sun bronze the skin; mustard, cantharides, and many like irritants cause a dermat.i.tis, which is accompanied by a deposition of pigment.

Leukoderma is as common in housemaids as in field-laborers, and is in no way attributable to exposure of sun or wind. True leukodermic patches show no vascular changes, no infiltration, but a partial obliteration of the rete mucosum. It has been ascribed to syphilis; but syphilitic leukoderma is generally the result of cicatrices following syphilitic ulceration.

Many observers have noticed that negroes become several degrees lighter after syphilization; but no definite relation between syphilis and leukoderma has yet been demonstrated in this race. Postmortem examinations of leukodermic persons show no change in the suprarenal capsule, a supposed organ of pigmentation.

Climate has no influence. It is seen in the Indians of the Isthmus of Darien, the Hottentots, and the Icelanders. Why the cells of the rete mucosum should have the function in some races of manufacturing or attracting pigment in excess of those of other races, is in itself a mystery. By his experiments on the pigment-cells of a frog Lister has established the relation existing between these elements and innervation, which formerly had been supposit.i.tious.

Doubtless a solution of the central control of pigmentation would confirm the best theory of the cause of leukoderma--i.e., faulty innervation of the skin. At present, whether the fault is in the cell proper, the conducting media, or the central center, we are unable to say. It is certainly not due to any vascular disturbances, as the skin shows no vascular changes.

White spots on the nails are quite common, especially on young people.

The mechanic cause is the presence of air between the lamellae of the affected parts, but their origin is unknown. According to Crocker in some cases they can be shown to be a part of trophic changes.

Bielschowsky records the case of a man with peripheral neuritis, in whom white spots appeared at the lower part of the finger-nails, grew rapidly, and in three weeks coalesced into a band across each nail a millimeter wide. The toes were not affected. Shoemaker mentions a patient who suffered from relapsing fever and bore an additional band for each relapse. Crocker quotes a case reported by Morison of Baltimore, in which transverse bars of white, alternating with the normal color, appeared without ascertainable cause on the finger-nails of a young lady and remained unchanged.

Giovannini describes a case of canities unguium in a patient of twenty-nine, following an attack of typhoid fever. On examining the hands of this patient the nails showed in their entire extent a white, opaque, almost ivory color. An abnormal quant.i.ty of air found in the interior of the nails explains in this particular case their impaired appearance. It is certain that the nails, in order to have admitted such a large quant.i.ty of air into their interior must have altered in their intimate structure; and Giovannini suggests that they were subject to an abnormal process of keratinization. Unna describes a similar case, which, however, he calls leukonychia.

Plica polonica, or, as it was known in Cracow--weicselzopf, is a disease peculiar to Poland, or to those of Polish antecedents, characterized by the agglutination, tangling, and anomalous development of the hair, or by an alteration of the nails, which become spongy and blackish. In older days the disease was well known and occupied a prominent place in books on skin-diseases. Hercules de Saxonia and Thomas Minadous, in 1610, speak of plica as a disease already long known. The greater number of writers fix the date of its appearance in Poland at about the year 1285, under the reign of Lezekle-Noir.

Lafontaine stated that in the provinces of Cracow and Sandomir plica formerly attacked the peasantry, beggars, and Jews in the proportion of 1 1/2 in 20; and the n.o.bility and burghers in the proportion of two in 30 or 40. In Warsaw and surrounding districts the disease attacked the first cla.s.ses in the proportion of one to ten, and in the second cla.s.ses one to 30. In Lithuania the same proportions were observed as in Warsaw; but the disease has gradually grown rarer and rarer to the present day, although occasional cases are seen even in the United States.

Plica has always been more frequent on the banks of the Vistula and Borysthenes, in damp and marshy situations, than in other parts of Poland. The custom formerly prevailing in Poland of shaving the heads of children, neglect of cleanliness, the heat of the head-dress, and the exposure of the skin to cold seem to favor the production of this disease.

Plica began after an attack of acute fever, with pains like those of acute rheumatism in the head and extremities, and possibly vertigo, tinnitus aurium, ophthalmia, or coryza. Sometimes a kind of redness was observed on the thighs, and there was an alteration of the nails, which became black and rough, and again, there was clammy sweat. When the scalp was affected the head was sore to the touch and excessively itchy. A clammy and agglutinating sweat then occurred over the cranium, the hair became unctuous, stuck together, and appeared distended with an adhesive matter of reddish-brown color, believed by many observers to be sanguineous. The hair was so acutely sensitive that the slightest touch occasioned severe pain at the roots. A viscid matter of a very offensive smell, like that of spoiled vinegar, or according to Rayer like that of mice or garlic, exuded from the whole surface of each affected hair. This matter glued the hairs together, at first from their exit at the skin, and then along the entire length; it appeared to be secreted from the whole surface of the scalp and afterward dried into an incrustation. If there was no exudation the disease was called plica sicca. The hair was matted and stuck together in a variety of ways, so as to resemble ropes (plica multiformis). Sometimes these ma.s.ses united together and formed one single thick club like the tail of a horse (plica caudiformis). Again, and particularly in females, the hair would become matted and glued together into one uniform intricate ma.s.s of various magnitudes. The hair of the whole body was likely to be attacked with this disease. Kalschmidt of Jena possessed the p.u.b.es of a woman dead of plica, the hair of which was of such length that it must have easily gone around the body. There was formerly a superst.i.tion that it was dangerous to cut the hair until the discharge diminished. Lafontaine, Schlegel, and Hartman all a.s.sure us that the section of the affected ma.s.ses before this time has been known to be followed by amaurosis, convulsions, apoplexy, epilepsy, and even death.

Alarmed or taught by such occurrences, the common people often went about all their lives with the plica gradually dropping off. Formerly there was much theorizing and discussion regarding the etiology and pathology of plica, but since this mysterious affection has been proved to be nothing more than the product of neglect, and the matting due to the inflammatory exudation, excited by innumerable pediculi, agglutinating the hair together, the term is now scarcely mentioned in dermatologic works. Crocker speaks of a rare form which he ent.i.tles neuropathic plica, and cites two cases, one reported by Le Page whose specimen is in the Royal College of Surgeons Museum; and the other was in a Hindoo described by Pestonji. Both occurred in young women, and in both it came on after washing the hair in warm water, one in a few minutes, and the other in a few hours. The hair was drawn up into a hard tangled lump, impossible to unravel, limited to the right side in Le Page's patient, who had very long hair, and in Pestonji's case to the back of the head, where on each side was an elongated ma.s.s, very hard and firm, like a rope and about the size of the fist. There was no reason to believe that it was ascribable to imposture; the Hindoo woman cut the lumps off herself and threw them away. Le Page found the most contracted hairs flattened. Stellwagon reports a case of plica in a woman. It occupied a dollar-sized area above the nape of the neck, and in twelve years reached the length of 12 feet. There was no history of its manner of onset.

Tinea nodosa is a name given by Morris and Cheadle to a case of nodular growth on the beard and whiskers of a young man. In a case noticed by Crocker this disease affected the left side of the mustache of a medical man, who complained that the hair, if twisted up, stuck together. When disintegrated the secretion in this case seemed to be composed of fungous spores. Epithelium fragments, probably portions of the internal root-sheath, sometimes adhere to the shaft of the hair as it grows up, and look like concretions. Crocker states that he is informed by White of Boston that this disease is common in America in a.s.sociation with alopecia furfuracea, and is erroneously thought to be the cause of the loss of hair, hence the popular name, "hair-eaters."

Thomson describes a case of mycosis fungoides in a young girl of the age of fourteen, whom he saw in Brussels toward the end of October, 1893. She was the third of a family of 13 children of whom only five survived. Of the children born subsequently to the patient, the first were either premature or died a few days after their births. The seventh was under treatment for interst.i.tial kerat.i.tis and tuberculous ulceration of the lips and throat. The disease in the patient made its appearance about seven months previously, as a small raised spot in the middle of the back just above the b.u.t.tocks. Many of the patches coalesced. At the time of report the lumbar region was the seat of the disease, the affection here presenting a most peculiar appearance, looking as if an enormous b.u.t.terfly had alighted on the patient's back, with its dark blue wings covered with silvery scales, widely expanded.

The patient was not anemic and appeared to be in the best of health.

None of the glands were affected. According to Thomson there is little doubt that this disease is caused by non-pyogenic bacteria gaining access to the sweat-glands. The irritation produced by their presence gives rise to proliferation of the connective-tissue corpuscles.

Jamieson reports a case of mycosis in a native of Aberdeenshire aged thirty-eight. There was no history of any previous illness. The disease began three years previous to his application for treatment, as a red, itching, small spot on the cheek. Two years later lumps presented themselves, at first upon his shoulders. The first thing to strike an observer was the offensive odor about the patient. In the hospital wards it made all the occupants sick. The various stages of the disease were marked upon the different parts of the body. On the chest and abdomen it resembled an eczema, on the shoulders there were brown, pinkish-red areas. On the scalp the hair was scanty, the eye-brows denuded, and the eyelashes absent. The forehead was leonine in aspect. From between the various nodosities a continual discharge exuded, the nodosities being markedly irregular over the limbs. The backs of the hands, the dorsums of the feet, the wrists and ankles, had closely approximating growths upon them, while under the thick epidermis of the palms of the hands were blisters. Itching was intense.

The patient became emaciated and died thirteen days after his admission into the hospital. A histologic examination showed the sarcomatous nature of the various growths. The disease differed from "b.u.t.ton-scurvy." Mycosis fungoides approximates, clinically and histologically, granulomata and sarcomata.

Morris described an interesting case of universal dermat.i.tis, probably a rare variety of mycosis fungoides. The patient had for many years a disease which had first appeared on the arms and legs, and which was usually regarded by the physicians who saw the case as eczema. At times the disease would entirely disappear, but it relapsed, especially during visits to India. At the time the patient came under the care of Morris, his general health seemed unaffected. The skin of the whole body, except the face, the scalp, and the front of the chest, was of a mahogany color. The skin of the lips was so thickened that it could not be pinched into folds, and was of a mottled appearance, due to hemorrhagic spots. All over the thickened and reddened surface were scattered crops of vesicles and boils. The nails were deformed, and the toes beyond the nails were tense with a serous acc.u.mulation. The glands in the right axilla and the groin were much enlarged. The hair on the p.u.b.es had disappeared. The abdomen was in a condition similar to that upon the limbs, but less in degree. The front of the chest below the nipples was covered with dark papules the size of a pin's head. The back, the b.u.t.tocks, the face, and the scalp presented similar lesions.

The most striking lesions were three ulcers--one on the back of the right hand, one on the right temple, and the other on the left cheek.

The largest was the size of a florin, and had elevated borders, somewhat infiltrated; they were covered with a brown, dry scab. The patient suffered from itching at night so that he could not sleep. He was kept under observation, and in spite of treatment the malady advanced in a periodic manner, each exacerbation being preceded by a feeling of tension in the parts, after which a crop of vesicles would appear. Sometimes, especially on the feet, bullae formed. The patient finally left the hospital and died of an intercurrent attack of pneumonia. A microscopic examination revealed a condition which might be found with a number of the chronic affections of the skin, but, in addition, there were certain cell-inclusions which were thought to represent psorosperms. Morris thought this case corresponded more to mycosis fungoides than any other malady.

CHAPTER XVII.

ANOMALOUS NERVOUS AND MENTAL DISEASES.

Epilepsy has been professionally recognized as a distinct type of disease since the time of Hippocrates, but in earlier times, and popularly throughout later times, it was illy defined. The knowledge of the clinical symptoms has become definite only since the era of cerebral local anatomy and localization. Examination of the older records of epilepsy shows curious forms recorded. The Ephemerides speaks of epilepsy manifested only on the birthday. Testa mentions epilepsy recurring at the festival of St. John, and Bartholinus reports a case in which the convulsions corresponded with the moon's phases.

Paullini describes epilepsy which occurred during the blowing of wind from the south, and also speaks of epilepsy during the paroxysms of which the individual barked. Fabricius and the Ephemerides record dancing epilepsy. Bartholinus and Hagendorn mention cases during which various splendors appeared before the eyes during the paroxysm. G.o.dart Portius, and Salmuth speak of visions occurring before and after epileptic paroxysms. The Ephemerides contains records of epilepsy in which blindness preceded the paroxysm, in which there was singing during it, and a case in which the paroxysm was attended with singultus. Various older writers mention cases of epilepsy in which curious spots appeared on the face; and the kinds of aura mentioned are too numerous to transcribe.

Baly mentions a case of epilepsy occasioned by irritation in the socket of a tooth. Webber reports a case of epilepsy due to phimosis and to irritation from a tooth. Beardsley speaks of an attempt at strangulation that produced epilepsy. Brown-Sequard records an instance produced by injury to the sciatic nerve. Doyle gives an account of the production of epilepsy from protracted bathing in a pond. Duncan cites an instance of epilepsy connected with vesical calculus that was cured by lithotomy. Museroft mentions an a.n.a.logous case. Greenhow speaks of epilepsy arising from an injury to the thumb. Garmannus, early in the eighteenth century, describes epilepsy arising from fright and terror.

Bristowe in 1880, and Farre speak of similar instances. In Farre's case the disease was temporarily cured by an attack of acute rheumatism.

Thorington of Philadelphia has seen a paroxysm of epilepsy induced by the instillation of atropia in the eye of a child nearly cured of the malady. It was supposed that the child was terrified on awakening and finding its vision suddenly diminished, and that the convulsions were directly due to the emotional disturbance. Orwin describes epilepsy from prolonged lactation, and instances of ovarian and uterine epilepsy are quite common.

There is a peculiar case of running epilepsy recorded. The patient was a workman who would be suddenly seized with a paroxysm, and unconsciously run some distance at full speed. On one occasion he ran from Peterborough to Whittlesey, where he was stopped and brought back.

Once he ran into a pit containing six feet of water, from which he was rescued. Yeo says that s.e.xual intercourse occasionally induces epilepsy, and relates a case in which a severe epileptic fit terminated fatally three days after the seizure, which occurred on the nuptial night.

Drake reports the case of a man who was wounded in the War of 1812, near Baltimore, the ball pa.s.sing along the left ear and temple so close as to graze the skin. Eighteen years after the accident he suffered with pain in the left ear and temple, accompanied by epileptic fits and partial amnesia, together with an entire loss of power of remembering proper names and applying them to the objects to which they belonged.

He would, for instance, invariably write Kentucky for Louisville.

Beirne records the case of a dangerous lunatic, an epileptic, who was attacked by a fellow-inmate and sustained an extensive fracture of the right parietal bone, with great hemorrhage, followed by coma. Strange to say, after the accident he recovered his intellect, and was cured of his epileptic attacks, but for six years he was a paralytic from the hips down.

The Dancing Mania.--Ch.o.r.ea has appeared in various epidemic forms under the names of St. Vitus's dance, St. Guy's dance, St. Anthony's dance, choromania, tanzplage, orchestromania, dance of St. Modesti or St.

John, the dancing mania, etc.; although these various functional phenomena of the nervous system have been called ch.o.r.ea, they bear very little resemblance to what, at the present day, is called by this name.