“…The onset of arthritis is acute or chronic. Acute sarcoid arthritis typically occurs in the lower extremities, and is often associated with bilateral hilar lymphadenopathy (BHL) and erythema nodosum (EN) (4). Acute sarcoidosis with the triad of acute arthritis, BHL, and EN was described as Löfgren's syndrome (5 F i g u r e 1 .…”