Inflammatory myopathy | Dermatomyositis and polymyositis | Juvenile dermatomyositis and polymyositis | Myositis with associated connective tissue disease: Sjögren's syndrome, scleroderma, lupus, rheumatoid arthritis | Localized myositis | Inclusion body myositis | Systemic necrotizing vasculitis | Polymyositis associated with graft-versus-host disease | Behçet syndrome | Sarcoidosis | Infectious myopathy | Bacterial pyomyositis | Viral myositis | Mycobacterial myositis | Fungal myositis | Parasitic myositis | Spirochetal myositis | Dystrophinopathies | Duchenne | Becker | Fascio-scapulo-humeral | Limb-girdle | Myotonic dystrophy | Duchenne and Becker carriers | Rhabdomyolysis | Trauma, crush injuries, coma | Extreme exertion | Environmental heat illness | Seizures, delirium tremens | Electrolyte disturbances: hypokalemia, hypophosphatemia | | Drugs | Colchicine | Antimalarials | Penicillamine | Zidovudine | Lipid-lowering agents: statins, fibrates, niacin | Alcohol | Cocaine | Nondepolarizing muscle relaxants with high-dose corticosteroids | Metabolic myopathies | Carbohydrate metabolism enzyme deficiencies | Lipid metabolism enzyme deficiencies | Purine metabolism enzyme deficiencies | Malignant hyperthermia | Endocrine myopathies | Hypothyroidism | Acromegaly | Periodic paralyses | Familial periodic paralysis | Thyrotoxic periodic paralysis | Post-exercise | Iatrogenic | Intramuscular injection | Electromyography | Intraoperative muscle injury | Motor neuron disease | Amyotrophic lateral sclerosis | Spinal muscular atrophies | |