II. Differential Diagnosis: Cutaneous (Dermatomyositis)

III. Differential Diagnosis: Neuromuscular Disorders

  1. Genetic Muscular Dystrophies
  2. Spinal Muscular Atrophy
  3. Myasthenia Gravis
  4. Eaton Lambert Syndrome
  5. Amyotrophic Lateral Sclerosis
  6. Myotonia
  7. Organophosphate Poisoning
  8. See Neuropathy
    1. Guillain-Barre (other autoimmune polyneuropathies)
    2. Multiple Sclerosis
    3. Diabetes Mellitus
    4. Porphyria

IV. Differential Diagnosis: Endocrine and Metabolic Disorders

  1. Electrolyte
    1. Hypokalemia
    2. Hypocalcemia
    3. Hypomagnesemia
  2. Hypothyroidism
  3. Hyperthyroidism
  4. Hypoparathyroidism
  5. Hyperparathyroidism
  6. Cushing's Syndrome
  7. Addison's Disease
  8. McArdle's disease (Glycogen Phosphorylase Deficiency)
  9. Adult acid maltase deficiency
  10. Carnitine-palmitoyltransferase deficiency
  11. Periodic paralysis

V. Differential Diagnosis: Toxic Myopathy

VII. Differential Diagnosis: Miscellaneous

Images: Related links to external sites (from Bing)

Related Studies (from Trip Database) Open in New Window