Audiologic evaluation in Charcot-Marie-Tooth disease.

We have carried out a hearing study with pure tone audiometry and ABR of 39 patients affected by hereditary motor and sensory neuropathy or Charcot-Marie Tooth disease. We have noticed a hearing deficiency in a significant percentage of cases (28%). We attribute the abnormalities to disorders in the area of the VIIIth nerve and of the brainstem. No significant differences appear in the results obtained between patients belonging to type I and patients belonging to type II of this disease.