Dermatophytoses are the infections of fungi which can live in dead keratin tissue and affect the stratum corneum of epidermis, of the skin, nails and hairs. Tinea corporis is a superficial dermatophytosis which is seen in skin parts except hairy skin, beard, hand, foot and inguinal region. This report describes a tinea corporis case with endothrix type of hair involvement. A 26-year-old male patient referred for two indurated plaques on the dorsum of the right hand and the extensor surface of the forearm. A potassium hydroxide (KOH) analysis of lesional skin scrapings was negative, while the KOH analysis of the hairs was positive. The patient responded well to systemic terbinafine therapy. In patients who are considered clinically as tinea, if direct KOH analysis from skin scrapings is negative, examination of the hairs place may facilitate diagnosis.