A Case of Fungal Eosinophilic Folliculitis / 대한피부과학회지

ABSTRACT

Recently, a new classification of eosinophilic folliculitis (EF) was made as follows: classic eosinophilic pustular folliculitis (EPF; Ofuji's disease), HIV associated EF, pediatric EF, fungal EF and miscellaneous group. A 10-year-old boy presented with a 2-week history of pruritic, erythematous papules with a plaque on his left cheek. A biopsy specimen revealed folliculitis with predominant eosinophilic infiltrates. Clinicohistopathologically, the most compatible diagnosis was eosinophilic pustular folliculitis and subsequently, dapsone was administered for 2 weeks but the lesion showed insufficient improvement, and the original confluent papules changed to a KOH-positive, arciform scaly lesion. A serial section from the paraffin block of the first biopsy, which had been histopathologically negative for fungal hyphae in the first, revealed hyphae in a single follicular canal in only one section out of 100 sections examined. This is believed to be the first reported case of fungal eosinophilic folliculitis in Korea.