RESUMEN
Background: Seizure is a common neurological presenting symptom at the emergency department (ED). Recurrent seizure may result in an overcrowded ED and affect morbidity. Factors associated with recurrent seizure in Thailand or other developing countries are limited. Methods: Clinical features of adult patients who presented with seizure at the ED, Ramathibodi Hospital, Mahidol University, Thailand were retrospectively reviewed. Factors associated with recurrent seizure were identified by multivariate logistic regression analysis. Results: During the study period, there were 65,586 patients who visited the ED. Of those, there were 156 seizure patients who were identified for analysis. The mean (S.D.) age of all patients was 47.44 (19.80) and males accounted for 41.67%. There were 40 patients who had recurrent seizures (25.64%). There were 10 significant factors associated with recurrent seizure at the ED. Of those, seven factors had a positive association with recurrent seizure; the top three factors were seizure attacks >4 times prior to ED visit, age >70 years and cerebral infarction, while the other three factors were negatively associated (history of antiepileptic drugs, brain surgery and alcohol consumption). Conclusions: Recurrent seizure at the ED may be related to seizure history prior to the ED visit, age, cause of seizure, and co-morbid conditions.