In all cases, it is necessary to make careful examinations in order to detect any obscure chronic disease which may exist. In women, nervous prostration often develops without perceptible cause at the age of puberty or at the "change of life." Overwork, especially overwork combined with worry, are fruitful causes of nervous exhaustion in both sexes.
AN OVERWORKED NERVOUS SYSTEM
is always an exhausted nervous system. The nerve cells have been robbed of their vital forces. All the nutritive organs of the body suffer from the lack of nerve control, and the blood-vessels that supply the nerve centres are not in proper tone. Hence the supply of blood and the action of the heart are greatly interfered with. Many times, the most troublesome symptom, early in the disease, is an excessive perspiration of the hands and feet.
IMPOVERISHED OR POOR BLOOD.
A badly nourished nervous system is irritable. Many of the symptoms of weakness and lack of nutrition resemble those found in congestion, or stimulation from excess of blood. Then, too, we find sometimes that poor, thin, watery blood, not suitable for nourishment although sent in large amount to the brain, does not properly nourish that organ. There will still be brain exhaustion, as the nervous structures have lost their power of absorbing the nutrient materials from the blood which, being poor in quality, does not vitalize and strengthen the nerve centres as it should. In such cases thought is an effort and sustained mental exertion is impossible; the memory is uncertain, and the patient drowsy. Occasionally, after rest, there may be flashes of brilliancy, but generally they are brief.
DANGER OF CONTRACTING INTEMPERANCE.
The patient often learns that a small amount of wine or spirits is a temporary aid, and sometimes its habitual use is begun in this way. Stimulants only make a bad matter worse when their use is continued for any considerable length of time. The sufferer becomes more and more dependent upon them and the nervous exhaustion is much aggravated as large quantities are taken to satisfy the morbid craving that has been acquired.
Wakefulness, or insomnia, is present in many cases; in others, there is unusual drowsiness but sleep gives neither rest nor strength; often it is disturbed by dreams that exhaust the vitality and leave the patient more tired than when rest was sought.
Headache is one of the most annoying symptoms and sometimes is very persistent. It may incapacitate the patient for the ordinary duties of life. After laying down awhile and being quiet, the headache may be relieved, but recurs on attempting to go about.