DR Medhat MRCP

Cerebellar syndromes :
Archicerebellar syndrome (disturbed equilibrium):
- Unsteady Standing = Swaying (trunkal ataxia)
Gait (drunken gait) = wide-base or staggering gait.
Neocerebellar syndrome (incoordination of voluntary movement) :
- Nystagmus .
- Dysarthria : Staccato speech (explosive interrupted speech).
- Head nodding.
- Intention kinetic tremors in the extremities.
- Body deviation towards the affected side (in unilateral lesion) or zegzag
gait (in bilateral lesion).
In both archicerebellar & neocerebellar syndrome there are :
1- Hypotonia
2- Hyporeflexia
Ataxias
• Def : Incoordination of voluntary movements
in absence of motor weakness with or
without disequilibrium.
• Types :
1. Cerebellar ataxia.
2. Sensory ataxia.
3. Vestibular ataxia.
4. Combined ataxia.
5. Hysterical ataxia.
Cerebellar ataxia
• Causes :
1. Herido-familial : Friedreich`s ataxia , Marie`s ataxia ,ataxic telangiectasia .
2. Idiopathic : cortical cerebellar degeneration in old age.
3. Infective : encephalitis , cerebellar abscess , tuberculoma.
4. Vascular : superior , middle , inferior cerebellar artery occlusion.
5. Toxic : alcohol (Wernik`s encephalopathy)
6. Neoplastic : astrocytoma , medulloblastoma.
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