This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Kerion

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

This is a vigorous inflammatory reaction to dermatophyte infection, occasionally associated with secondary bacterial infection, that occurs on the scalp, resulting in a boggy inflammatory swelling with pustules called a kerion (1) Fever and lymphadenopathy may accompany the infection (2).

This condition is often due a zoophilic dermatophyte such as Trichophyton verrucosum from cattle. It may be also seen with anthrophilic ring worm (1).

Diagnosis is made via mycological assessment of hairs plucked from the areas of involvement together with skin scrapings

  • If there is a clinical suggestion of secondary bacterial infection then swabs should also be sent for bacteriology

The prolonged use of griseofulvin (12-16 weeks) may be necessary for the resolution of this condition (1).

Incision, drainage, or debridement should be avoided (2). The crusts can be removed by soaking the Kerions with lukewarm water or saline which will have a soothing effect (1).

Without treatment kerions can lead to permanent scarring and hair loss (2).

Reference:


Related pages

Create an account to add page annotations

Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.