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Differential diagnosis of acquired causes of creatine kinase elevation.
| MYOPATHIES |
| Drug/toxin-induced |
| Hypothyroidism/hypoparathyroidism |
| Metabolic myopathies |
| Inflammatory myopathies |
| NEUROPATHIES |
| Guillain–Barre syndrome |
| MOTOR NEURON DISEASES |
| Amyotrophic lateral sclerosis |
| Spinal muscular atrophy |
| Postpolio syndrome |
| OTHERS |
| Race |
| Sex |
| Surgery |
| Trauma (needle EMG studies, intramuscular injections) |
| Viral illness |
| Medications |
| Strenuous exercise |
| “Idiopathic hyperCKemia” |
