Acute arthritis with subcutaneous nodules on the shin-acute sarcoidosis [lofgren's syndrome]

This case report describes a young Lebanese man with acute polyarthritis, fever and tender erythematous nodules on both shins. The nodules had the appearance of typical erythema nodosum [EN]. An algorithmic approach to acute arthritis with erythema nodosum led to a diagnosis of Lofgren's syndrome that is a variety of acute sarcoidosis. Differential diagnosis of acute arthritis with EN in males is discussed