REM Sleep Behaviour Disorder in oversixty epilepsy patients: Frequency of occurrence and features of comorbidity

Frequency of occurrence of REM Sleep Behaviour Disorder (RBD) and the features of RBD-epilepsy co-morbidity were investigated in 74 elderly epilepsy patients (44 men; mean age 70.8 years). Co-existence of RBD was documented in 10 out of the 74 subjects, with RBD episodes preceding seizures onset, in six cases, by a mean of 5.7 years. The RBD episodes significantly prevailed in men and tended to occur more frequently in over-seventy subjects with cryptogenic epilepsy and sleep-related seizures.