Abstract
Frequency and degree of hypergraphia were studied to assess interictal behavior change in temporal lobe epilepsy. Patients with temporal lobe epilepsy tended to reply more frequently to a standard questionnaire and wrote extensively (mean: 1301 words) as compared to others (mean: 106 words). The incidence of temporal lobe epilepsy was 73% in patients exhibiting hypergraphia compared to 17% in patients without this trait. Hypergraphia may be a quantitative index of behavior change in temporal lobe epilepsy.