Abstract: 【Abstract】 A 20-year-old female patient presented with erythema and pustules on both hands accompanied by itching for one month. Skin examination showed patchy erythema on the thenar eminence and little finger of both hands, covered with yellow crusts; on the basis of erythema, soybean- to broad bean-sized pustules were observed, with turbid pustular fluids and flaccid pustular walls, but without rupture. Fungal microscopy of skin scales revealed the presence of hyphae. After the fungal culture of hedgehog spines and the patient's skin scales, microscopy showed septate hyphae in colonies; the sequencing of the two colony samples mentioned above both indicated Trichophyton erinacei, and the homology was as high as 99.8%. Finally, the patient was diagnosed with Trichophyton erinacei-induced tinea incognito. The patient′s symptoms subsided after 2-week treatment with itraconazole and naftifine hydrochloride.

Key words: Tinea, Epidermophyton, Trichophyton hedgehog, Tinea incognito, Pustules