Nummular dermatitis presents as a well-demarcated coinshaped annular plaques form from coalescing papules and papulovesicles. In atypical manifestations of tinea corporis such as vesiculopustular lesion, the accurate diagnosis can be missed. Especially, cutaneous lesions caused by Trichophyton (T.) verrucosum which is known to be most common causative pathogen of dermatophytosis caused by cattle are usually characterized clinically by intense inflammation so they are often misdiagnosed as eczema. A 58-year-old female patient who is cattle keeper presents with localized, pruritic, 3.0 X 3.0 cm sized erythematous annular plaque with central clearing and vesicular border on the left upper arm for 1 month. The result of KOH examination on the left upper arm lesion was negative so we cultured and did biopsy for definitive diagnosis. Histopathology showed short septated hyphae in the stratum corneum. Culture from skin biopsy specimens on Sabouraud’s dextrose agar yielded slow growing, folded, heaped, glabrous, white colonies and lack pigment reverse side after 6 weeks. Microscopically, chains of chlamydoconidia were observed in slide culture. The nucleotide sequence of internal transcribed spacer for clinical isolate was identical to that of T. verrucosum strain CBS 562.50. The patient was treated with 100 mg of oral itraconazole daily for 1 month and the skin lesion was improved completely.