ataxia

(noun)

Lack of coordination while performing voluntary movements, which may appear to be clumsiness, inaccuracy, or instability.

Related Terms

  • anxiolysis

Examples of ataxia in the following topics:

  • Ataxia

    • Cerebellar ataxia is ataxia that is due to dysfunction of the cerebellum .
    • The term sensory ataxia is employed to indicate ataxia due to loss of proprioception.
    • Ethanol is capable of causing reversible cerebellar and vestibular ataxia.
    • Hereditary disorders causing ataxia include autosomal dominant ones such as spinocerebellar ataxia, as well as autosomal recessive disorders such as Friedreich's ataxia.
    • The treatment of ataxia and its effectiveness depend on the underlying cause.
  • Primary Immunodeficiency Diseases

    • DNA repair defects not causing isolated SCID; for example ataxia telangiectasia and ataxia-like syndrome
  • Medulla Injury

    • Example clinical symptoms include difficulty swallowing, slurred speech, ataxia, facial pain, and vertigo.
  • Brain Tumors

    • Dysfunction: Depending on the tumor location and the damage it may have caused to surrounding brain structures, either through compression or infiltration, any type of focal neurologic symptoms may occur, such as cognitive and behavioral impairment, personality changes, ataxia, visual field impairment, impaired sense of smell, impaired hearing, double vision, dizziness; more severe symptoms might occur, such as including partial paralysis or impairment to swallow.
  • Assessing CNS Disorders

  • Depressants

    • Effects often include ataxia, anxiolysis, pain relief, sedation or somnolence, and cognitive/memory impairment; in some instances, effects include euphoria, dissociation, muscle relaxation, lowered blood pressure or heart rate, respiratory depression, anticonvulsant effects, and even complete anesthesia or death.
  • Neurodegenerative Disorders

    • Spinocerebellar ataxia, for example, leads to neuronal death in the cerebellum.
  • Functions of the Cerebellum

    • Damage to the upper part of the cerebellum - gait impairments and other problems with leg coordination (ie, ataxia). 
  • Traumatic Brain Injury

    • Movement disorders that may develop after TBI include tremor, ataxia (uncoordinated muscle movements), myoclonus (shock-like contractions of muscles), and loss of movement range and control (in particular with a loss of movement repertoire).
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