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Ataxia: symptoms and causes
The cerebellum central structures (eg, the pupa and the villi) coordinate movement with the muscle through longitudinal motor pathways. Damage to these structures leads to ataxia and lurching.
Description
Ataxia refers to an imbalance of posture when the patient is standing upright, moving head and body (eg, staggering posture). The patient may ask for help to maintain an upright position.
Causes
Often met
Cerebellar infarction.
Cerebral haemorrhage.
Alcohol.
Medicines (eg: benzodiazepine, lithium, phenytoin).
Less common
Scattered stiff fibres.
Mass lesions (eg, tumour, abscess, AVM).
Arnold – Chiari malformation.
Near-tumor cerebellar degeneration
Figure. Cerebellar function anatomy
Mechanism
The cerebellum central structures (eg, the pupa and the villi) coordinate movement with the muscle through longitudinal motor pathways. Damage to these structures leads to ataxia and lurching.
Meaning
Ataxia is a sign of the cerebellar centre.
Board. Cerebellar function anatomy and related motor pathways
|
Cerebellar surgery |
Function |
Road-related movement |
|
The pupa and the villi. |
Coordination between the root chi and the body. Vestibular - eye reflex. |
Anterior medullary strip. Strip grid marrow Vestibular band. The medullary roof strips. |
|
Intermediate hemisphere. |
Coordination in the limbs. |
Lateral medullary strip. The red band of marrow. |
|
Hemisphere side. |
Command apparatus, tops chi. |
Lateral medullary strip. |
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