Seizure-related injury in an adult tertiary epilepsy clinic.

Objective: To assess the frequency, characteristics, and risk of injury during seizure attacks.

Methods: Questionnaire survey. Methods: Epilepsy out-patient clinic of the National Hospital for Neurology and Neurosurgery, Institute of Neurology, London. Methods: One hundred consecutive epileptic patients and their caretakers or relatives, who attended the hospital between 1 May and 30 June 2000. Methods: Details of epilepsy including the age of onset, causes, types, and number of seizures during the previous 12 months; injuries incurred as a result of seizures; and treatment required.

Results: The mean age of the 100 patients (38 male, 62 female) was 39 years (range, 16-78 years). Generalised tonic-clonic seizures occurred in 51% of patients and complex partial seizures in 40%. Hippocampal sclerosis was found in 12% of patients. Twenty-seven patients reported 222 seizure-related injuries. The total number of seizures per year was 4459 (mean, 45), of which 1094 (mean, 11) were with a fall (24.5%). Soft-tissue injury was the most common (61%), followed by burns (17%), head injury (14%), orthopaedic injury (5%), and injuries in water (3%). The most common site of soft-tissue injury and burns were to the face: 49% and 38% respectively. Burns occurred during cooking in 78% of cases. Two patients had skull fractures. Orthopaedic injuries usually occurred at home (73%). In cases of seizures in water, five of six occurred while swimming. Injury occurred once in every 20 seizures, every 11 generalised tonic-clonic seizures, and every five seizures with a fall. The significant risk factors for injury were generalised tonic-clonic seizures, high frequency of seizures, and seizures with a fall.

Conclusions: Soft-tissue injury was the most common seizure-related injury. Injury occurred once in every 20 seizures. The risk factors were generalised tonic-clonic seizures, high frequency of seizures, and seizures with a fall.