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This 40-year-old woman complains of “hair loss,” although she has not noticed any unusual amounts of hair on her brush or comb or in the sink when she shampoos. She says that the...
First described in 1846 by Eichstedt, tinea versicolor is caused by saprophytic, lipid-dependent yeasts in the genus Malassezia that are part of normal skin flora.
The differential diagnosis for moccasin-variety tinea pedis includes contact dermatitis; eczema; chronic irritation, as from ill-fitting shoes; and psoriasis.
Urticarial rashes are common presentations in primary care. The specific causes are wide ranging, but it has been estimated that 20% to 30% of cases of chronic-type urticaria are due to physical urticaria.
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