Hyperkinetic movement disorders and related disorders
| Disorder | Clinical characteristics |
| Dystonia | Persistent or intermittent muscle contractions that lead to abnormal movements and/or postures. |
| Myoclonus | Sudden, brief, shock-like movements. |
| Tremor | Rhythmic, oscillatory movement of a body part. |
| Chorea | Continuous, abrupt, unpredictable non-rhythmic jerky movements. |
| Tics | Stereotyped, repeating, shock-like movements, which can be temporarily repressed. Patients feel an urge preceding the movements. |
| Ataxia | Inability to perform smooth, coordinated, targeted movements. |
| Spasticity | Variable combination of paresis, elevated reflexes and increased muscle tone. |