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Cerebellum Disorders

This category comprises disorders of the cerebellum, or lower brain, that involve impairment of balance, movement, and coordination.

The cerebellum is at the back of the brain, below the cerebrum. It is much smaller than the cerebrum at only one eight of its size.

Tremors

What Are Tremors? Tremors are repetitive patterns of involuntary muscle contraction and relaxation originating from disorder in the basal ganglia of the brain. See image of hand tremor (to left) courtesy of Antonio Piedade. Rythmic shaking may affect various parts of ...

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Progressive Myoclonic Ataxia 

What Is Progressive Myoclonic Ataxia? Progressive myoclonic ataxia is a movement disorder characterized by defective muscular coordination of a muscle group with its origin in the brain. The pathology is in the cerebellum.1 Myoclonus in a context of progressive ataxia ...

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Chorea

What Is Chorea? Chorea is a movement disorder characterized by brief, jerky, purposeless or writhing involuntary movements of the distal limbs, head, and face that may occur during voluntary movement or at rest. Chorea has a large number of causes, ...

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Ataxia, Gluten

What Is Gluten Ataxia? Gluten ataxia is a degeneration of the cerebellum (lower brain) caused by an immune reaction to gluten that is characterized by positive anti-gliadin antibodies, motor abnormalities including upper or lower limb ataxia, gait ataxia, and dysarthria ...

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Ataxia, Gait

What Is Gait Ataxia? Gait ataxia is a cerebellar (lower brain) disorder characterized by defective muscular coordination of skeletal muscles used for locomotion (walking). Q: What is defective muscle coordination for walking? A: The cerebellum does not initiate movements but ...

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