ACANTHOMA FISSURATUM CUTIS / ULCER

Description: red linear erosion with surrounding scale

This 62-year-old woman who wore glasses for years developed an erosion on the retroauricular fold of her right ear. The erosion is easily observed when she raises her ear.

Acanthoma fissuratum cutis is a common cutaneous lesion induced by chronic mechanical trauma. Most cases are caused by poorly fitting spectacle frames. The main differential diagnosis is basal cell carcinoma.