Progressive Sensory Loss in Familial Dysautonomia
1 Department of Pediatrics, New York University Medical Center, New York
Clinical variability in sensory impairment was demonstrated among 75 patients with familial dysautonomia. Older patients had a greater tendency toward increased dysfunction in pain sensation, joint position and Romberg's sign, and vibratory sense. Significant worsening with increased age was supported by retesting of 53 patients after a five-year interval. Sensory and motor axon loss were indicated by electrodiagnostic testing of peripheral nerves and abnormal cortical somatosensory evoked potentials. Familial dysautonomia is a hereditary disease with variable penetrance which involves both failure of intrauterine development of neurons and their postnatal maintenance.
Submitted on April 2, 1980Accepted on July 7, 1980
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