| Traumatic or compression |
| Multiple trauma |
| Crush injuries |
| Vascular or orthopedic surgery |
| Coma |
| Immobilization |
| Nontraumatic |
| Exertional |
| Normal muscle |
| Extreme exertion |
| Environmental heat illness |
| Sickle cell trait |
| Seizures |
| Hyperkinetic states |
| Abnormal muscle |
| Metabolic myopathies |
| Mitochondrial myopathies |
| Malignant hyperthermia |
| Neuroleptic malignant syndrome |
| Nonexertional |
| Alcoholism |
| Drugs and toxins |
| Infections (including HIV) |
| Electrolyte abnormalities |
| Endocrinopathies |
| Inflammatory myopathies |
| Miscellaneous |
