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Cerebellar ataxia

Midline

nystagmus, head and trunk titubation, gait ataxia

tumor, multiple sclerosis

superior vermis

gait ataxia

Wernicke’s encephalopathy, alcoholic cerebellar degeneration, tumor, multiple sclerosis

Cerebellar hemisphere

Nystagmus, ipsilateral gaze paresis, dysarthria(especially left hemisphere lesion), ipsilateral hypotonia, ipsilateral limb ataxia, gait ataxia, falling to side of lesion

Infarction, hemorrhage, tumor, multiple sclerosis

Pancerebellar

Nystagmus, bilateral gaze paresis, dysarthria, bilateral hypotonia, bilateral limb ataxia, gait ataxia

Drug intoxications, hypothyroidism, hereditary cerebellar degeneration, paraneoplastic cerebellar degeneration, Wilson’s disease, infections and parainfectious encephalomyelitis, Creutzfeldt-Jakob disease, multiple sclerosis

Sensory ataxia

Polyneuropathy

Autosomal dominant sensory ataxic neuropathy

Cisplatin

Dejerine-Sottas disease(HMSN type III)

Diabetes

Diphtheria

Hypothyroidism

Immune-mediated neuropathies(GALOP syndrome, anti-MAG antibody syndrome, Miller Fisher syndrome, anti-GD1b antibody syndrome)

Isoniazid

Paraneoplastic sensory neuronopathy(anti-Hu antibodies)

Pyridoxine

Refsum’s disease

Taxol

Myelopathy

Acute transverse myelitis

AIDS(vaculor myelopathy)

Multiple sclerosis

Tumor or cord compression

Vascular malformations

Polyneuropathy or myelopathy

Friedreich’s ataxia

Neurosyphilis(tabes dorsalis)

Nitrous oxide

Vitamin B12 deficiency

Vitamin E deficiency