| Degenerative | 23 |
| Spinocerebellar ataxia | 13 |
| Sporadic adult onset ataxia | 9 |
| Multisystem atrophy (cerebellar type) | 1 |
| Posterior fossa vascular lesions | 10 |
| Craniocervical malformation | 8 |
| Arnold–Chiari malformation type I | 7 |
| Arnold–Chiari malformation type II | 1 |
| Toxic | 5 |
| Chronic ethanol abuse with cerebellar atrophy | 1 |
| Chronic ethanol abuse without cerebellar atrophy | 1 |
| Anticonvulsants (phenytoin, carbamazepine) | 2 |
| Amiodarone | 1 |
| Inflammatory/infectious | 4 |
| Pancerebellar syndrome post-tick borne encephalitis | 1 |
| Cerebellitis of unclear aetiology | 1 |
| Chronic aseptic meningitis | 1 |
| Pontine encephalitis | 1 |
| Neoplastic | 4 |
| Pontomedullary astrocytoma | 1 |
| Cerebellar meningeoma | 1 |
| Ependymoma; hydrocephalus | 1 |
| Plexus papilloma 4th ventricle | 1 |
| Episodic ataxia type 2 | 4 |
| Paraneoplastic | 3 |
| Paraneoplastic (anti-yo/anti-Purkinje-Cell positive) | 2 |
| Paraneoplastic (anti-yo/anti-Purkinje-Cell negative) | 1 |
| Other | 11 |