[Epilepsy/cardiac arrhythmia? Differential diagnostic problems].

In cases of suspected epilepsy the possibility of cardiac arrhythmias should be considered. Two case histories are presented. One patient had grand mal epilepsy combined with Wolff-Parkinson-White syndrome. In the other patient, epilepsy was suspected. However, the final diagnosis proved out to be third degree atrioventricular block. Examination must include an electrocardiogram and in case of doubt, Holter monitoring.