Seizure frequency and major life events in epilepsy.

A group of 18 patients with chronic epilepsy were followed in an outpatient clinic for 1-6 years. Month-by-month seizure records were kept and the response to treatment was systematically explored. The present study was prompted when three patients became seizure-free, apparently in response to major life events (marriage, parenthood, and retirement) rather than to changes in treatment. All the subjects were interviewed in their own homes with a companion, friend, or relative present. The interview was based on a standard instrument (Life Experiences Survey, LES). The home environment was chosen to facilitate recall of events and to enable subjects to confirm dates. The seizure record was then compared with the parallel life events record. Two methods of analysis were adopted. In the first, each life event was assumed to have impact on seizure frequency only during the month in which it occurred; life event months were compared with non-life-event months. In the second, a life event was considered a watershed; seizure frequencies before and after the event were compared. Nonparametric statistical methods were used. These approaches revealed associations between life events and seizure frequency in three additional patients (total six). Most of the patients who showed an association experienced partial seizures.