BALDNESS (technically alopecia), the result of loss of hair, particularly on the human scalp. Two forms may be distin guished : one the premature baldness common in young men, due to alopecia seborrhoeic, the other alopecia areata, now regarded as an epidemic disease.
Alopecia seborrhoica is always due to the underlying disease seborrhoea, and, though it progresses steadily if neglected, is yet very amenable to treatment by sulphur and salicylic acid, 18 grains of each added to an ounce of vaseline making a good application. This should be rubbed well into the scalp daily for a prolonged period. The head must be frequently cleansed, and in very mild cases a daily washing with soap spirit will at times effect a cure unaided.
Alopecia areata is characterized by the development of round patches more or less completely denuded of hair. It is most commonly observed on the scalp, though it may occur on any part of the body where hair is naturally present. At the margin of the patches short, broken hairs are usually to be seen. Clinical evidence is steadily accumulating to show that this disease may be transmitted. The disease must be distinguished from ring worm (q.v.).
The loss of hair following acute fevers must be treated by keeping the hair short, applying stimulating lotions to the scalp, and attending to the general hygiene of the patient.