Musculoskeletal sarcoidosis with a dermatologic clue for diagnosis: a case report.

Sarcoidosis is a multisystem, inflammatory disorder characterized by infiltration of any organ with non-caseating granuloma. Clinical picture depends on which system(s) involved. Pulmonary, lymphatic and musculoskeletal systems are the most commonly affected systems. Skin is one of the frequently involved organs. Its involvement may provide a direct diagnostic clue. Here we have presented a young man with systemic sarcoidosis. The major complaint from him was the musculoskeletal pain. But the route to diagnosis starts from a lesion over the scalp.