Nearly three-fourths of the patients who suffer from melancholia will recover from a first attack under proper care. Subsequent attacks make the prognosis much more unfavourable. Not more than one-half will recover from a second attack, and, although melancholia is often spoken of as a mild form of intellectual disturbance, recurring attacks give a proportionately worse and worse outlook for the patient.
If the general condition of the patient, that is, the physical health, is very much run down when the mental disturbance commences, then the outlook is much better than if the mental disturbance should occur when the patient is enjoying ordinarily good health. Thin, anaemic patients, contrary to what might be expected, usually recover and often their recovery is permanent. The first favourable sign in the case is an improvement in physical health. This is very shortly followed by an almost corresponding improvement in the mental condition. When the patient has reached the normal physical condition, the mental disturbance has usually disappeared.
It is an extremely unfavourable sign, however, to have run-down patients gradually improve in physical health { 221} without commensurate improvement in their mental condition. This is nearly always a positive index that the mental disturbance will continue for a long while, may not be recovered from completely, or may degenerate into a condition of dementia with more or less complete loss of mental faculties.
The severe forms of melancholia are apt to be associated with delusions. Fear becomes a prominent factor, and the patient is afraid of every one who approaches, or concentrates his timidity with regard to certain persons or things. Delusions of persecution are not unusual, and this sometimes leads to homicidal tendencies. After enduring supposed persecution for as long as he considers it possible, the melancholic turns on his persecutors and inflicts bodily harm. The simplest actions, even efforts to benefit the patient by enforcement of the regulations of the physician, may be misconstrued into serious attempts at personal injury, for which the patient may execute summary vengeance. At times the hallucinations take on the character of the supposition that attempts to poison them are being made. The patient may conceal his supposed knowledge of these attempts until a favourable opportunity presents itself for revenging them. On the other hand, it is not an unusual thing to have melancholic patients commit homicide with the idea of putting friends out of a wicked world. The stories so common in the newspapers of husbands who kill wives and children, of mothers who murder their children, are often founded on some such delusion as this. A mother argues with herself, that her own unworthiness is to be visited on her children, and that they are to be still more unhappy than she is. Out of maternal solicitude, then, but in an acute excess of melancholia, she puts them out of existence and ends her own life at the same time.