Epilepsy: a neurological complication of thalidomide embryopathy.

The possibility of epilepsy resulting from maternal thalidomide ingestion was investigated by obtaining a telephoned neurological history from all suspect families in the United Kingdom in which the specific diagnosis was uncertain. The annual incidence in the first seven years of life was found to be five times the figure for the general population, and the prevalence of active epilepsy is significantly increased in the teenage thalidomide population. That this increased incidence and prevalence of epilepsy is not a chance observation is supported by published clinical and experimental evidence of central nervous system abnormalities in thalidomide embryopathy, in addition to the known neurological effects of the drug in the adult.