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February 1969

Diagnosis of Uncommon Dermatoses: Additional Uses of a Simple Office Procedure

Author Affiliations

Calgary, Alberta, Canada

From the Department of Medicine (Dermatology), Foothills Hospital, Calgary, Alberta, Canada.

Arch Dermatol. 1969;99(2):152-153. doi:10.1001/archderm.1969.01610200024004

Caterpillar dermatitis and fiber glass (Fiberglas) dermatitis can be diagnosed with certainty when caterpillar hair or fiber glass filaments are demonstrated in skin scrapings. The latter are treated with 20% KOH or NaOH and examined microscopically.

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