What is favus?

Updated: Feb 21, 2020
  • Author: Marc Zachary Handler, MD; Chief Editor: Dirk M Elston, MD  more...
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Favus (also termed tinea favosa) is a severe form of tinea capitis. Favus is a chronic infection caused most commonly by T schoenleinii and, occasionally, by T violaceum or Microsporum gypsum. Scalp lesions are characterized by the presence of yellow cup-shaped crusts termed scutula, which surround the infected hair follicles. Favus is seen predominantly in Africa, the Mediterranean, and the Middle East and, rarely, in North America and South America, usually in descendants of immigrants from endemic areas. Favus usually is acquired early in life and has a tendency to cluster in families. In favus, infected hairs appear yellow.

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