| Toxicologic |
| Amphetamine/methamphetamine intoxication |
| Anticholinergic delirium |
| Cocaine intoxication |
| Ethanol or sedative-hypnotic withdrawal |
| Neuroleptic malignant syndrome |
| Serotonin syndrome |
| Synthetic cannabinoids (eg, spice; K2) |
| Synthetic cathinones (eg, "bath salts") |
| Non-toxicologic |
| Hypoglycemia |
| CNS infection (encephalitis, meningitis) |
| Head trauma (intracranial hemorrhage) |
| Sepsis |
| Schizophrenia (other psychiatric illness) |
| Thyroid storm |
