How does the causative agent of tinea capitis (scalp ringworm) vary by geographic location?

Updated: Feb 21, 2020
  • Author: Marc Zachary Handler, MD; Chief Editor: Dirk M Elston, MD  more...
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Answer

Historically, M audouinii was the classic causative agent in Europe and America and M ferrugineum was most common in Asia. Currently, M audouinii and M canis remain prevalent in most parts of Europe, although T violaceum also is common in Romania, Italy, Portugal, Spain, and the former USSR, as well as in Yugoslavia. In Africa, T violaceum, T schoenleinii, and M canis commonly are isolated. [4] T violaceum and M canis are prevalent agents in Asia. [5] T schoenleinii is common in Iran and Turkey, while M canis is common in Israel. Epidermophyton floccosum and T concentricum do not invade scalp hair. Trichophyton rubrum, which is the most common dermatophyte isolated worldwide, is not a common cause of tinea capitis.


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