Klinefelter syndrome and neurological disease.

Six patients with Klinefelter syndrome (47,XXY) and different neurological disease are described. Essential tremor has been reported repeatedly but its significance deserves further studies. The prevalence of epilepsy with the Klinefelter syndrome is higher in comparison with the normal poplation, but it is not greater than expected in the population of a mental hospital. Therefore we suggest that the neurological symptoms with the Klinefelter syndrome should basically be regarded as coincidental findings not related to the chromosome abnormality.