Inflammatory Myopathies

Involve proximal muscles first, fine-motor tasks are involved later.
Ocular muscles are never involved, diff from myasthenia gravis and Eaton-Lambert syndrome

Lab: CPK, aldolase, anti-Jo-1
Electromyograph: short-duration, low-amplitude

steroids for polymyositis and dermatomyotitis


Heliotrope Rash


Gottron's sign





Inclusion body myositis