Piedra
Synonyms
Black Piedra
Black Piedras
Piedra, Black
Piedra, White
Piedras
Piedras, Black
Piedras, White
White Piedra
White Piedras
Either of two diseases resulting from fungal infection of the hair shafts. Black piedra occurs mainly in and on the hairs of the scalp and is caused by Piedraia hortae; white piedra occurs in and on the hairs of the scalp, beard, moustache and genital areas and is caused by Trichosporon species.