Nutritional causes:
(1) thiamine deficiency
(2) vitamin E deficiency
Drug or therapeutic causes:
(1) anticonvulsant drugs
(2) benzodiazepines
(3) narcotics
(4) chemotherapy
(5) lithium
(6) vaccine
Toxic exposures:
(1) ethanol
(2) mercury poisoning
Hereditary or neurodegenerative:
(1) autosomal dominant spinocerebellar ataxias
(2) autosomal recessive cerebellar ataxias
(3) X-linked cerebellar ataxias
(4) multiple system atrophy, cerebellar type
(5) sporadic ataxia with adult onset
Vascular causes:
(1) infarction
(2) hemorrhage
(3) venous sinus thrombosis
Neoplastic causes:
(1) primary brain tumor
(2) metastatic tumor to brain
(3) paraneoplastic cerebellar degeneration
Infectious cerebrellitis (see 17.63.06)
Immune or inflammatory causes:
(1) post-infectious cerebellitis
(2) multiple sclerosis
(3) acute demyelinating encephalomyelitis
(4) other autoimmune disorders
