What findings on dermoscopy and videodermatoscopy suggest tinea capitis (scalp ringworm)?

Updated: Feb 21, 2020
  • Author: Marc Zachary Handler, MD; Chief Editor: Dirk M Elston, MD  more...
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Dermoscopy has been proposed as a way to make a diagnosis of tinea capitis, and even differentiate tinea capitis organisms. [25] T tonsurans has been described as having multiple comma-shaped hairs and M canis with dystrophic and elbow-shaped hairs. [26]

A small study in patients with tinea capitis from M canis found that comma hairs were a prominent and distinctive feature on videodermatoscopy; comma hairs were not seen in patients with alopecia areata. [27]

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