Kahlbaum’s catatonia types15
| Catatonia types | Clinical descriptions |
| Catatonia mitis | Mild form, rapid development, associated with depression, good prognosis. |
| Catatonia gravis | Severe form, relatively rapid development, associated with pure mania and mixed states, good prognosis. |
| Catatonia protracta | Severe form, insidious onset, bizarre movements and behaviours, chronic, poor prognosis. |