Duane's syndrome and familial perceptive deafness.

A 15-year-old girl, who had a left-sided Duane's syndrome, was noted to be profoundly deaf with a severe speech defect. The deafness had been detected at the age of 5 years and necessitated her attendance at a special school. A slight facial asymmetry was present and she adopted an abnormal head posture, turning the head to the left side. Some degree of mental retardation was present but no other general physical abnormalities were detected. A urinary amino acid chromatogram did not show any abnormalities.