Ataxia is the lack of voluntary coordination of muscle movements that can include gait abnormality, speech changes and abnormalities in eye movements.

Etiology of cerebellar ataxia

Acute Ataxia

A-Central

Cerebellar lesions

Brainstem lesion

Thalamus

B-Peripheral

Polyradiculoneuropathy

Labyrinthitis

C-Central or peripheral

 Drug/toxin /metabolic

Slowly progressive

Congenital

Hereditary

AR

AD 

Acquired diseases

Drug/toxin /metabolic

Episodic/Recurrent Ataxia

Channelopathies

Migraine

Epilepsy

TIA

MS

Drug/toxin /metabolic /mitochondrial