SS RraamerrarrararrmeraerarsoerratremnreeaT THR Sr ~ ~ LG \ \\ \ NN AC \\ | \ CC CLL CLM WF, Yi Y NN yy KE 540 Hf. ae THE PATHOLOGY OF MIND. THE PATHOLOGY OF MIND. BEING THE THIRD EDITION OF THE SECOND PART OF THE *“ PHYSIOLOGY AND PATHOLOGY OF MIND,” RECAST, ENLARGED, AND REWRITTEN. BY HENRY MAUDSLEY, M.D. NEW YORK: D. APPLETON AND COMPANY, 1, 8, asp 5 BOND STREET. 1882. eee x LIBRARY. a PREFACH. Tue first edition of the Physiology and Pathology of Mind was published in the year 1867, and the second edition in the year following. A third edition of the first part was published in the year 1876 as a separate treatise on the Physiology of Mind. In the order of time and development this volume on the Pathology of Mind is therefore a third edition of the second part; but in substance it is a new work, having been recast throughout, largely added to, and almost entirely rewritten. The new material which has been added includes chapters on “ Dreaming” and on “Somnambulism and its Allied States,” subjects which, although they may not perhaps be thought to appertain strictly to a treatise on mental pathology, will be found, when studied scientifically, to throw light upon its obscure phenomena and to help to bridge the gap between it and mental physiology. A perplexing impression was produced on my mind when I first began to study mental diseases—now upwards of twenty years aco—by the isolation in which they seemed to be. On the one hand, treatises on psychology made no mention of them, and gave not the least help towards an understanding of them; and, on the other hand, treatises on mental disorders, while giving full information concerning them, treated their subject as if it belonged to a science en- tirely distinct from that which was concerned with the sound mind. Inasmuch as psychological, physiological, and patho- - vi PREFACE. logical studies of mind were actually concerned with the sane subject-matter, it was obvious that methods of study which kept the different lines of inquiry entirely apart must be at fault somewhere, and that it would be a right aim, and one full of promise, to endeavour to bring them into relation with one another, and so to make psychology, physiology, and pathology throw light upon and give help to one another. The first edition, as stated in its preface, was the firstfruits of that endeavour, and the present volume, which embodies the results of deeper studies and more ripened experience, is the completion of it. The inclusion in it of chapters on the abnormal mental phenomena which are exhibited in dreams, hypnotism, ecstasy, catalepsy, and like states, is therefore a just part of the fulfilment of the general design. The same reason will, I trust, be held sufficient to justify the large amount of new and in some regards disputable matter which is included in the chapters on the “Causation and Pre- vention of Insanity.” It seemed proper to emphasise the fact that insanity is really a social phenomenon, and to insist that it cannot be investigated satisfactorily and apprehended rightly except it be studied from a social point of view. In that way only, I believe, can its real nature and meaning as an aberrant phenomenon be perceived and understood. In recasting the plan of the work I have thought it right therefore, in the chapter on Causation, first to treat generally of the etiology of mental derangement from a social standpoint, so fulfilling the requirements of its organic relations, so to speak, in the social organism ; and, secondly, to treat particularly of its patho- logical causation, so connecting it with the general pathology of nervous disease, and answering the requirements of scientific pathology. In describing the symptoms of insanity, I have thought it well again, first, to treat it generally as one disease, setting forth the varieties of symptoms which it presents at different PREFACE. vii times and at different stages of its course; and, secondly, to occupy a separate chapter with the delineation of the different clinical groups of mental disorders which are met with in practice and have to be dealt with by the physician. In this way I hope to have met the obligations of a true scientific exposition and the more practical needs of those who have to form an opinion concerning the cause, the course, the probable termina- tion, and the proper treatment of a particular case of disease. Had the chapter on Symptomatology been left out, the omis- sion must needs have entailed a great deal of vague repetition in the description of the clinical groups, with the certain effect of blurring their outlines and features, and of confusing the reader; had the special chapter describing these groups been omitted, he would have obtained only a vague and general notion of the symptoms of mental derangement, without that more definite and practical acquaintance with its clinical varieties, which, now that we are able, I think, to delineate their features, ought to form part of a treatise on mental dis- orders. Whatever be the value of the clinical pictures in this volume, they have certainly been drawn from life, and had space permitted I might have illustrated each line of description by the records of cases. The full and analytical Index which has been added will serve not only to make reference easy, but will enable the reader to judge what sort of fare he may expect if he is minded to make trial of it. CONTENTS. CHAPTER I. SLEEP AND DREAMING. 2 «© « «© «© © © «© « . CHAPTER II. HYPNOTISM, SOMNAMBULISM, AND ALLIED STATES. . CHAPTER III. TUE CAUSATION AND PREVENTION OF INSANITY (A) ETIOLOGICAL, CHAPTER IV. TNE CAUSATION AND PREVENTION OF [INSANITY oe (A) ETLOLOGICAL (continued). CHAPTER V. THE CAUSATION AND PREVENTION OF INSANITY . , (B) PATHOLOGICAL. CHAPTER VI. TIE INSANITY OF EARLY LIFE . 2 « « PAGE 50 83 127 175 x CONTENTS. CHAPTER VII. PAGE THE SYMPTOMATOLOGY OF INSANITY . 6 6 © «© © © © © «© «© 296 CHAPTER VIII. THE SYMPTOMATOLOGY OF INSANITY (continucd) . « » + « « « 356 CHAPTER IX. CLINICAL GROUPS OF MENTAL DISEASE » « « «6 «© «6 « « « « 402 CHAPTER X. THE MORBID ANATOMY OF MENTAL DERANGEMENT. 2 » » « « « 489 CHAPTER XI. THE TREATMENT OF MENTAL DISORDERS . . 4 © «© © « « © « O22 PATHOLOGY OF MIND. CHAPTER L SLEEP AND DREAMING, As we pass neatly the third part of our short lives in sleep it is pleasing to think that the time so spent is not misspent nor lost. Sleep marks that periodical suspension of the functions of animal life, or life of relation, during which the organs that minister to them undergo the restoration of energy which is necessary after a period of activity. Waste of substance, which is the con- dition and the result of active exercise of function, must be repaired during rest; instead of its being a surprise, therefore, that we sleep, the wonder would be if we did not sleep. In the work and thought of the day is given out by degrees the energy which has been stored up during repose. The need of repair is as true of the organic functions, which never seem to sleep, as it is of the animal functions, which sleep through so large a pro- portion of our lives. For although an organ like the heart seems not to rest day or night from the first moment of action unto the last moment when it ceases to beat more, yet it plainly rests between each stroke, gaining thereby in alternating snatches of repose the energy for the next stroke; and it is really at rest during a longer period than it is in action—has rested more than it has worked when its life-work is ended. If the heart of an animal which is beating regularly when the chest is opened be made to beat slowly by stimulation of its vagus nerve it will go on beating fora long time; but if its beats are quickened by 2 PATHOLOGY OF MIND. ({cuaP. irritation of its sympathetic nerve it soon comes to a standstill from exhaustion ; nutritive repair and the removal of the waste products of activity cannot keep pace with the rapid con- sumption of energy in the accelerated pulsations ; it is exhausted as the gymnotus is exhausted when it has been provoked to re- peated electrieal discharges and can give no more shocks until it has recruited its energies. The lowest animal forms, which seem not to sleep at all, probably sleep, like the heart, in similar brief snatches of rest. The organism is a self-feeding and self-repair- ing machine, but it cannot do its repairs when it is in full work; it must have for its parts, as for its whole, its recurring periods of adequate rest ; and the time comes at last when, like any other machine, it wears out, is no more capable of repair, and when the exhaustion which ensues is death—the sleep during which there is no repair and from which there is no awaking. The conditions under which we go to sleep, the causes which promote it, and the ill effects which follow the deprivation thereof, are proofs of its true purpose in the animal economy. When we wish to sleep we shut out all external stimuli, as .a bird puts its head under its wing, banish all subjects of active thought or feeling, and place our bodies in as complete a state of muscular repose as possible: so sleep comes on insensibly as a deeper rest, not as an abrupt change, stealing upon us as darkness upon daylight. The general causes which produce it are such as exhaust the energy of the nervous system, either through suffering or doing, and so occasion fatigue of body and mind; they are muscular and mental exertion, when not too prolonged, the weariness which follows great emotional strain, when not too intense, and severe bodily pain. It is true that we may by a strong voluntary effort, or under the spell of an excitement, prolong the usual period of waking, and resist sleep, although we are very sleepy; but we cannot do so indefinitely, for torpor and incapacity of mental function, delirium, and death are the consequences of an entire deprivation of sleep. Tn this connexion it is interesting to ask why we awake— why, once asleep, we do not go gn sleeping for ever? Probably very much as the power of the exhausted clectric eel to give a shock revives when restoration of energy has taken place by 1] SLEEP AND DREAMING. 3 nutrition during rest. A stimulus to the body, of external or of internal origin, which would have been unfelt during the deep sleep of exhaustion, or would have only been enough to occasion a dream, suffices, as the sleep becomes light through restoration of energy, to awaken the individual either directly or by the vividness of the dream which it occasions. We should not sleep for ever, I believe, if every external stimulus were shut out; for the accumulation of nervous energy would awaken us either spontaneously, or on occasion of the least internal stimulus, which, as the organic functions are not suspended, though they are more languid, during sleep, could not be shut out. If these functions regained their full activity they might directly cause waking: On the time at which we awake habit notably has a great influence within certain limits; when we allow the nervous system so many hours for repose, we accustom it to that allowance, and it learns to do its repairs within the allotted time. Of what are the physiological. accompaniments of the occur- rence of sleep we know nothing more than that the circulation of blood through the brain is lowered; not as cause probably, but as coincident effect of the state of nerve-element. Blumen- bach long ago took notice ina man whose skull had been tre- panned that the brain swelled with blood and rose into the opening when he was awake and thinking, and sank down again when he fell asleep; and the experiments of Mr. Durham, who, having removed circular portions of the skull in different ani- mals, and replaced them by suitable watch-glasses, through which he could observe what happened when the animal was awake and when it was asleep, convinced him that there was . considerably less blood in the brain during sleep; its substance then being paler and sinking down, while it reddened and became turgid directly the animal awoke. The fontanelles of young children sink during sleep ; and forcible compression of the carotid arteries in the neck of the adult will induce it. There is an active flow of blood to the part where the stimulus of func- tional energy attracts and needs it, and when active function is suspended by the recurring necessities of restoring the expended energy by sleep, the circulation of blood falls to the level of 4 PATHOLOGY OF MIND, [crar. the mere organic requirements of the brain: the supply answers in fact to the different states of the brain, being active when its functions are active, moderate when they are in abeyance. A short step further has been made in conjecture. Knowing that different parts of the brain are supplied with blood by different arteries, the main channels of which go on dividing and sub- dividing into smaller channels until these become capillary, it has been surmised that an active circulation may sometimes be going on in certain vascular areas of the brain while the circulation in other parts of it is lowered to the level of sleep, not otherwise than as local blushings occur elsewhere in the body from vaso-motor dilatations, and that these active local circulations in the brain are the conditions of that modified and irregular activity which constitutes dreaming: one part of the brain is supposed to be more or less awake when the rest of it is asleep. Recently the theory has been broached that sleep is caused by the accumulation of the products of the oxidation which takes place during activity; they are not presumably removed so rapidly as they are produced during active function, but are carried away, like the refuse in some cities, during the repose of the night. It is not known what is the exact nature of these combustion-products, but it is assumed that they act upon the nerve-elements very much as carbonic acid does, causing a sort of narcosis when they accumulate. Any condition then which hinders their removal from the brain, such as prolonged activity thereof, will favour sleep; any condition which accelerates their removal will tend to prevent it. Sleep is not a constant, but a fluctuating state. There are degrees of sleep, not only of the cerebro-spinal system as a whole, but of its different ._parts—so many intermediate steps between it and waking; wherefore we may be rightly said to graduate through a twilight-waking into imperfect sleep, and from light slumber into profound unconsciousness. It is hard to say sometimes whether we have been asleep or not; for the wandering and incoherent ideas and the suddenly arising hallu- cinations of a grotesque kind which occur just as we are going to sleep are so like the vagaries of dreams, that we know not at LJ SLEEP AND DREAMING. 5 all times whether they were part of our waking or of our sleep- ing life. The stages in the gradually deepening unconsciousness which is produced by opium illustrate very well the gradations in the process of going to sleep: there is first a drowsy feeling which becomes soon an irresistible inclination to sleep; the person then falls into a slumber from which he may be roused sufficiently to make a reply to a question put to him in a loud voice, thereupon sinking back immediately into sleep, which deepens rapidly into a comatose unconsciousness from which the severest pinching, slapping, and irritation of all kinds hardly avail to elicit more than the least sign of feeling or the briefest responsive movement; finally he sinks into so deep a coma that he is insensible to anything that may be done to him; all the tortures which savage ever devised and inflicted upon his enemy, or Christian upon his fellow-believer of a minutely different shade of faith, would not touch him—he is in the unconscious- ness of death before death. One sense goes to sleep after another, each sinking gradually into a deeper slumber, then the spinal cord, and, last of all, the respiratory centre in the medulla oblongata, when the man dies. In the production of insensibility by the inhalation of chloroform or of ether we observe evidence that the person hears after he can no longer see, and that the senses of taste and smell are lost before those of hear- ing and touch; and in natural sleep it is obvious that there are similar gradations of unconsciousness, one sense being sometimes more deeply asleep than another, or the spinal cord being awake when the special sensory centres are fast asleep.