Abstract
A CASE of trichonodosis (knotted hair) was reported in 1947 by Pratt.1To the present time that is the only report on this condition in the American literature. He quoted McCarthy2as stating that there are two types of trichonodosis: (1) a rare variety, occurring as solitary knots associated with abnormal hair growth, and (2) a commoner variety, occurring as single or multiple knots, resulting from forces. Pratt's case was an example of the first variety. The following report deals with the mechanical type of trichonodosis, of which no account exists in the American literature. REPORT OF A CASE M. S., a 46 year old white man, was seen at the New York Skin and Cancer Unit of the New York Post-Graduate Medical School and Hospital on March 10, 1948. He complained of generalized itching and parasites on the skin of two years' duration. Past treatment elsewhere
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