As Westphal well says15 of such persons, “They often think correctly and logically, and show reflection and deliberation to a certain degree; but there is a certain something lacking, and there are some general conceptions, general processes of thought and judgment, of which they are incapable. Their mentality stops short on a certain plane, especially in matters of judgment where every even uneducated person easily succeeds. They sometimes act as if they had good judgment and common sense, of which they are really destitute, particularly in regard to the proprieties of life and their proper social relations and duties. Certain of the finer feelings are absolutely impossible of development in them. Through their various nets, perverted by their mental defect, the patients often seem perverse (bösartig), passionate (leidenschaftlich), although of true sustained passion they are incapable. What seems passion is a sudden idea or fitful impulse to which they yield at once. Moral insanity is a defect in the affective sphere, but also an intellectual defect of a peculiar kind, which is often concealed under the mask of a perverted moral sense, and which requires time and practice on the part of the physician for its detection.”
15 Berl. klin. Wochenchrift, 1878, No. 15.
Moral insanity is quite certain to pursue a downward course, although something can be done by training, general hygiene, simple diet, mental discipline, avoiding overwork, a judicious choice of the few occupations of which the moral insane are capable, and a constant steadying hand to help them try to keep their balance.
IMPULSIVE INSANITY is perhaps more properly called instinctive monomania, as the morbid impulse is usually shown in only one insane propensity at a time. Like moral insanity, its manifestations are commonly periodic, or at least alternating. Under the name of emotional insanity it furnishes sympathetic juries with an excuse for finding not guilty of murder women who kill their betrayers and husbands who shoot a wife's seducer. It is a not uncommon symptom in a considerable proportion of the persons suffering from the various forms of insanity. As a separate disease it is quite rare, and includes those persons whose insanity is manifested, as Marc says, by what they do rather than by what they say. The insane impulse does not come from any logical process. It is rarely provoked by or associated with a criminal motive, except in an analogous way to the production by excitement of an epileptic attack, to which, indeed, it offers some points of similarity. There would be reason to doubt the existence of the disease unless other indications of mental degeneration were present, especially where there is proof of a criminal motive or where the criminal act and the prisoner's statements are the sole evidence of unsoundness of mind. Unconsciousness, even temporary, and loss of memory, are not symptoms of instinctive monomania. On the contrary, the mind is quite clear, and resists successfully the insane impulse so long that the person affected with it has often gained confidence that he will never yield to it; and he soon learns the fact that, there being in circumstances external to himself no reason for the crime suggested to the mind with such force, temptations do not occur to the act. While the impulse lasts a great variety of distressing mental symptoms accompany it, so intense that the impulse often cannot be resisted, and then the terrible brain-tension is relieved. I doubt whether hallucinations of hearing are found in impulsive insanity, and incline to think that all the reported cases where crimes of impulse have been committed in obedience to a voice commanding the individual to do this or that act of violence are more properly classified under other forms of mental disease. One kind of instinctive monomania sometimes disappears to be replaced by another. In developing boys and girls there is not seldom a pathological mental state during which lying, stealing, running away from home, etc. are common for several months or a few years; but this is a curable condition, and does not by any means necessarily end in instinctive monomania.
Suicidal insanity is probably the most common form of instinctive monomania. The force, or even presence, of the suicidal impulse is largely dependent upon the general tone of the system. The suicidal idea is common; it occurs to the minds of a vast number of sane people at one time or another under adverse circumstances. Hysterical women talk a lot of nonsense on the subject. Self-destruction due to self-depreciation, weariness of life, and general gloom is not uncommon in the insane temperament. It is also a refuge to proud and sensitive people who have sacrificed their honor. But this is quite different from suicidal insanity, in which the impulse is often strongest at a time when there are the most reasons for living and the greatest happiness in life if the tormenting demon urging to self-murder could be excluded. Such people finally kill themselves, in spite of their best resolutions and efforts to the contrary, if the various faculties of the mind become more and more involved as the disease goes on and the power of self-control is progressively weakened. More general insanity of the degenerative type is sometimes developed from suicidal insanity.
Homicidal insanity is fortunately still rarer than the last-mentioned form, although motiveless homicidal ideas occur to husbands and wives and parents with reference to those dearest to them, under conditions of prolonged mental strain or exhaustion, during pregnancy and the puerperal state, and at the climacterium. In suspected crimes the evidence of homicidal insanity should be clear and should rest upon the general signs of the degenerative mental state. Homicidal impulses are common enough among the insane. Just as there are persons who do not dare to have sharp instruments in their rooms for fear of killing themselves, so there are others to whose minds axes, knives, and razors suggest imperative conceptions of plans for killing another. It is difficult in either case for the physician to satisfy himself at what point real insanity begins. Seclusion under the morbid influences of an asylum is very bad treatment for the individual, and symptoms which seem very serious often disappear by restoring the general health. In a recent case,16 where a youth of nineteen was acquitted of the murder of his mother on the ground of homicidal insanity, he knew that the act was wrong, realized that he had committed a crime, and was full of grief for it, as occurs in all such cases. It is the rule, too, that there is some condition of mental defect or degeneration out of which the homicidal insanity is developed.
16 Quarterly Journal of Mental Science, October, 1883, p. 387.
Dipsomania, a rare manifestation of impulsive insanity, differs entirely from the acquired alcohol habit, drunkenness, acute or chronic alcoholism, delirium tremens, or habitual intoxication, all of which conditions are also more readily developed in the neuro-psychopathic constitution than in persons with healthy brains, and may reach a point constituting insanity. Dipsomania is periodic, uncontrollable, and associated with other evidences of the insane diathesis. The prognosis is unfavorable. The treatment is to improve the general nervous tone and to seclude the patient during his attacks.
Pyromania and kleptomania are not rare as symptoms of insanity of the marked forms which are observed in asylums. As manifestations of impulsive insanity—that is, as constituting a form of insanity—they are associated with other evidences of mental defect or degeneration. Burning and stealing alone are not indications of insanity. As such, they are without sane motive, and directed to objects in burning or stealing which there is no gain to the person and usually no gratification except the sense of relief which comes from yielding to the impulse, and of distressing mental symptoms if the impulse is resisted.
Nymphomania in the female, satyriasis in the male, and the various perverse and degrading methods of gratification of the sexual instinct, may, when joined with other evidences of mental or nervous disorder, constitute one form of impulsive insanity. Erotomania, an ideal attachment without erotic feeling, is a more common mental disease, but the other evidences of insane conduct are quite striking. The same statement holds true of the many perverted instincts which, according to circumstances, are or are not manifestations of the defective brain-inhibition of disease. Animal impulse as a form of impulsive insanity I had been inclined to doubt until I recently saw two cases of as extreme mental suffering as I ever witnessed, in two refined ladies who had suffered also from some cerebral symptoms, occasional dizziness, and suicidal insanity, but who had no other symptoms of cerebral disorder than those which are grouped under the head of insane diathesis, and they not marked. It is not associated with any erotic feeling or with particular persons. There is more rapid wasting in flesh and strength and loss of sleep than in the other forms of impulsive insanity, and, in my experience, greater dread of yielding to the demon of unrest.