Influenza triggered myositis in an elderly patient: An atypical presentation of influenza infection.

Myositis is characterized by skeletal muscle inflammation and weakness, often accompanied by swelling and muscle pain or tenderness. The etiology could root from autoimmune causes, infective triggers or secondary to systemic diseases. Viral infections are the most widely known cause of infective myositis, among which influenza infection has claimed majority of cases. Here we highlight a case of an unusual but clinically important case of influenza-associated-myositis presenting as an atypical sudden-onset weakness.