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Tinea capitis.
Notes: (A) Scaly plaque with broken hairs and mild bogginess on the posterior right scalp (small arrow). Note the significant regional lymphadenopathy (large arrow). (B) KOH preparation. Ectothrix involvement of fungal spores is demonstrated on a KOH preparation of a pulled hair from the scaly plaque of the posterior right scalp.Culture identified Trichophyton tonsurans.
Abbreviation: KOH, potassium hydroxide.
