A Case of Plasma Cell Cheilitis / 대한피부과학회지

Plasma-cell cheilitis, a benign, inflammatory condition, is chacterized by polyclonal plasma cell infiltration in the dermis. It presents as circumscribed flat or elevated patches of erythema, usually on the lower lip in an elderly person. Plasma-cell cheilitis is the counterpart of Zoon's plasma-cell balanitis. A 63-year-old Korean man had an erythematous, erosive patch on his lower lip. By skin biopsy and immunoperoxidase staining to anti-kappa and lamda light chain, he was diagnosed as plasma cell cheilitis. He showed positive result in photopatch test to 6-methyl coumarine. His skin lesion improved after avoiding sun exposure, chewing gum and candy, and by intralesional injections of triamcinolone acetonide.