The associations, surroundings, and influences brought to bear upon the patient—what has been called the moral treatment—are of the first importance in the treatment of mental disease, and diet and hygiene come next. Medicines are of use in properly selected cases. The appetite must often be stimulated, the digestion regulated, and various painful symptoms must be relieved, so far as possible, without a resort to internal sedatives and narcotics. Rest and sleep are essential to recovery, but every effort should be made to obtain them by judicious regulation of outdoor exercise and of quiet as each case requires, abundant non-stimulating food frequently given, fresh air, tonics, baths, and removal of sources of irritation. Stimulants will sometimes be needed to prevent excessive exhaustion. Seclusion in a room darkened or not is useful in some conditions of excitement, and not seldom distressing symptoms are relieved by the simple presence of another person or by the absence of certain individuals. Drugs of sufficient strength and in such quantity as to produce quiet or sleep should be used only when absolutely necessary, and then for as short a time as possible. Their prolonged use is open to many manifest objections in all persons, and particularly in those suffering from mental disorders, inasmuch as with them large doses, if any, are commonly given, {136} and it is very difficult often, in the impaired state of mind of the patient, to get indications of symptoms which contraindicate the use of a particular drug or to learn when it is producing harmful effects. Tonics are often indicated, but should be used with discrimination, as some of them, especially those affecting the cerebral circulation, frequently produce disagreeable results. After apparent recovery there should be a long period of after-treatment, which in most cases will be best met in rest or travel. In the various forms of mental disease, through concentration of the mind on various delusions and by excess or deficiency in mental activity, the ordinary symptoms of physical disturbance or disease, independent of the insanity, are so much modified as to be often overlooked. It goes without saying that intercurrent diseases and distressing symptoms should be treated on the principles generally applicable to those conditions, so far as that can be done without aggravating the insanity. The usual treatment of pneumonia, for instance, may in an insane person provoke such determined opposition or so excite or aggravate delusions that, so far as the disease of the lungs is concerned, it may be better to let it take its chance, with good general care, including food, warmth, etc.