Disease or Syndrome
cerebellar ataxia
cer·e·bel·lar a·tax·i·a
Subclass of:
Cerebellar Diseases; Ataxia
Definitions related to cerebellar ataxia:
  • (ataxia) Cerebellar ataxia refers to ataxia due to dysfunction of the cerebellum. This causes a variety of elementary neurological deficits including asynergy (lack of coordination between muscles, limbs and joints), dysmetria (lack of ability to judge distances that can lead to under- or overshoot in grasping movements), and dysdiadochokinesia (inability to perform rapid movements requiring antagonizing muscle groups to be switched on and off repeatedly).
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • Incoordination of voluntary movements that occur as a manifestation of CEREBELLAR DISEASES. Characteristic features include a tendency for limb movements to overshoot or undershoot a target (dysmetria), a tremor that occurs during attempted movements (intention TREMOR), impaired force and rhythm of diadochokinesis (rapidly alternating movements), and GAIT ATAXIA. (From Adams et al., Principles of Neurology, 6th ed, p90)
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
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