Less common causes of hemichorea–hemiballism
| Primary/inherited | Secondary/acquired |
|---|---|
| Wilson’s disease | Vitamin B12 deficiency |
| Multiple sclerosis | Vascular |
| Huntington’s disease | Autoimmune |
| Motor neurone disease | Endocrine |
| Demyelinating disease | Drugs |
| Brain trauma or tumour | |
| Toxins |