Epileptic seizure as a presenting symptom of cerebrotendinous xanthomatosis.

Cerebrotendinous xanthomatosis (CTX) is a rare hereditary disease characterized by xanthomata of tendons, osteoporosis, cataracts, cerebellar ataxia, spastic paresis, and dementia. Though electroencephalographic (EEG) abnormalities are frequent in CTX, epileptic seizures have not been recognized as a major feature. A CTX patient is reported who presented with a generalized epileptic seizure and was evaluated with EEG and neuropsychological testing. Epilepsy should be considered a feature of CTX, and CTX considered as a possible, though rare, cause of symptomatic seizures.