sensory ataxia


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Related to sensory ataxia: vestibular ataxia

ataxia

 [ah-tak´se-ah]
failure of muscular coordination; irregularity of muscular action. adj., adj atac´tic, atax´ic.
cerebellar ataxia ataxia due to disease of the cerebellum.
Friedreich's ataxia see friedreich's ataxia.
frontal ataxia disturbance of equilibrium associated with tumor of the frontal lobe.
hereditary ataxia Friedreich's ataxia.
hysterical ataxia ataxia recognizable as a conversion symptom; see also astasia-abasia.
locomotor ataxia tabes dorsalis.
sensory ataxia ataxia due to loss of proprioception (joint position sense), resulting in poorly judged movements and becoming aggravated when the eyes are closed.
ataxia-telangiectasia a severe, autosomal recessive, progressive ataxia, associated with telangiectasias (dilation of small blood vessels) in the skin and eyes; immunodeficiency with frequent infections of the respiratory tract from sinuses to lungs; and abnormal eye movements. Called also Louis-Bar's syndrome.

sen·so·ry a·tax·i·a

an ataxia due to impairment of position sense caused by lesions located at some point along the central or peripheral sensory pathways.

sensory ataxia

Ataxia due to interference in conduction of sensory responses, esp. proprioceptive impulses from muscles. The condition becomes aggravated when the eyes are closed.
See: Romberg sign; spinal ataxia
See also: ataxia

ataxia

failure of muscular coordination; irregularity of muscular action.

cerebellar ataxia
ataxia characterized by defects in rate, range, force and direction of movement of limbs. There is a broad based stance, inability to maintain the head in the proper position so that it oscillates, there is hypermetria or hypometria, direction cannot be maintained and the animal falls easily, often in an exaggerated way.
congenital ataxia
cerebellar ataxia due to viral infection of the fetus, e.g. bovine virus diarrhea and feline panleukopenia, or to inheritance, e.g. in cattle. See also cerebellar atrophy.
copper-related ataxia
see copper nutritional deficiency.
enzootic ataxia
see enzootic ataxia.
equine sensory ataxia
see enzootic equine incoordination.
familial convulsions and ataxia of cattle
see familial convulsions and ataxia of cattle.
feline ataxia
see feline panleukopenia.
foal ataxia
see enzootic equine incoordination.
frontal ataxia
disturbance of equilibrium occurring in cases of tumor of the frontal lobe.
hereditary ataxia
see hereditary ataxia.
hound ataxia
a degenerative myelopathy of Foxhounds, Harrier hounds and Beagles. Affected dogs show increasing hindleg incoordination. A dietary cause is suspected.
locomotor ataxia
tabes dorsalis.
otarid ataxia
a syndrome in pinnipeds caused by nutritional deficiency of thiamin or enterotoxemia or hypoglycemia. Signs include heelwalking (elevation and curling of the rear toes) followed by running staggers, ataxia and violent falling.
progressive ataxia
an inherited disease of cattle in which hind limb ataxia commences at 6 months to 3 years of age and worsens over 1 to 2 more years to the point of recumbency. It is a myelin disorder with eosinophilic plaques in the cerebellar medula and peduncles. Called also progressive sensory ataxia of Charolais cattle.
sensorimotor ataxia
caused by moderate spinal cord lesions, manifested by weakness of movement, scuffing of toes, incomplete limb extension, knuckling, wobbly gait, easy falling, difficult rising.
sensory ataxia
ataxia due to loss of proprioception (joint position sense), resulting in poorly judged movements and becoming aggravated when the eyes are blindfolded.
spinal ataxia
see equine protozoal myeloencephalitis.
vestibular ataxia
a loss of balance with preservation of strength. If unilateral, the abnormality is asymmetrical; if bilateral, it is symmetrical.