1. DISEASES OF THE SWEAT-GLANDS
Definition. A functional disorder of the sweat-glands in which the sweat is absent or diminished in quantity.
Symptoms. Usually secondary in character, this condition may be local or universal in extent. It is common in areas affected by the lesions of ichthyosis, psoriasis, scleroderma and anesthetic leprosy, and in some forms of eczema, neuralgia and paralysis. The polyuria of diabetes and albuminuria naturally diminish sweat. Injuries to the nerve trunks may cause anidrosis and it is present in many trophoneuroses. Individuals who do not sweat are apt to have pruritus or erythematous and urticarial eruptions. Partial anidrosis seldom causes any discomfort and the same may be said of the generalized type, except under circumstances that ordinarily cause free sweating.
Treatment is directed toward the primary or underlying disease, Massage, vapor and alkaline baths, vibration, the high-frequency currents and jaborandi or pilocarpin given hypodermically will improve the innervation and stimulate the secretion in relievable cases. Any treatment is useless in the congenital type, although the application of simple oil will relieve the dryness. See indications for Alumina, Coca, Lycopodium and Nux moschata.