Öz
Subungual melanoma is a rare subtype of melanoma. Subungual melanoma usually presents as a discoloration of the nail, nail splitting, or nail bed bleeding and may easily be misdiagnosed as onychomycosis or bacterial infection. Furthermore, secondary infections are possible, which could lead to late diagnosis. For this reason, most subungual melanomas are diagnosed in advanced stages and are associated with a poor prognosis. We present the case of a 90-year-old man with a 6-year history of black discoloration in the left big toe and a 1-year history of coexisting purulent discharge, with a delayed diagnosis of subungual melanoma.