Scar sarcoidosis in pseudofolliculitis barbae.

A man with hilar adenopathy had smooth firm purplish papules (lupus pernio) on his face and pseudofolliculitis barbae (PFB) in his beard area. Biopsies of papules of both the lupus pernio and the PFB revealed non-caseating granulomas consistent with sarcoidosis. This is the first case report of sarcoidosis infiltrating lesions of PFB and the first of lupus pernio co-existing with scar sarcoidosis. In persons with suspected sarcoidosis, enlarged lesions of PFB are sites suitable for confirmatory biopsy. In addition, persons who develop keloid-like papules within their PFB may be providing an early cutaneous clue to undiagnosed systemic sarcoidosis.