Dermatophytosis Screening

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Syed Hassan A. Kazmi BSc, MD [2]

Overview

According to the the U.S. Preventive Service Task Force (USPSTF), there is insufficient evidence to recommend routine screening for dermatophytosis but the wood lamp examination may be used as a screening tool for tinea capitis in suspected cases.

Screening

Wood lamp examination

• In the wood lamp test, 360 mm black light helps in diagnosis by causing certain skin lesions to fluoresce.
• Screening can be done for tinea capitis via wood lamp examination, which will show the following findings:
  • Blue-green (most Microsporum species)
  • Dull yellow (Microsporum gypseum)
  • Dull blue (Trichophyton schoenleinii)