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Article
March 1973

White Piedra (Trichosporosis)

Author Affiliations

Houston

From the Department of Dermatology, Baylor College of Medicine, Houston. Dr. Smith is now with the Department of Dermatology, National Naval Hospital, Bethesda, Md.

Arch Dermatol. 1973;107(3):439-442. doi:10.1001/archderm.1973.01620180089029
Abstract

White piedra, caused by the yeast-like fungus Trichosporon cutaneum, is a superficial infection involving hair. The causative organism is easily isolated on Sabouraud's medium. Simple clinical and mycological techniques employed in making a positive identification are outlined. The organism rapidly colonizes hair when suspended in normal saline. To our knowledge, these are the fourth and fifth cases of white piedra reported in the United States. The incidence is probably greater than appreciated, for most lesions are just visible to the naked eye and, without close scrutiny, may be easily overlooked.

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