Acute Sarcoid Myositis (Acute Sarcoid Myopathy)

• have intermittent episodes when one or multiple muscles that become painful and tender?

• have weakness in the affected muscles during these episodes?

• show swelling or pseudohypertrophy in the affected muscles?

• have acute arthritis?

• show erythema nodosum?

• an elevated erythrocyte sedimentation rate (ESR)?

• an elevated serum creatine kinase?

Does an electromyogram during an episode show changes consistent with an inflammatory myopathy?

Does a muscle biopsy show myositis with noncaseating granulomas and myocyte degeneration?

Is there another condition (deep vein thrombosis, other form of myopathy) that can explain the findings better?