#motor_ataxia__motorataxia__ataxia__ataxy__dyssynergia  inability to coordinate voluntary muscle movements; unsteady movements and staggering gait
  supertype:  nervous_disorder__nervousdisorder__neurologicaldisorder__neurological_disease  a disorder of the nervous system
  part of:  spinocerebellar_disorder
  subtype:  Friedreich's_ataxia__herediatry_spinal_ataxia  sclerosis of the posterior and lateral columns of the spinal cord; characterized by muscular weakness and abnormal gait; occurs in children
  subtype:  hereditary_cerebellar_ataxia  nervous disorder of late childhood and early adulthood; characterized by ataxic gait and hesitating or explosive speech and nystagmus

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