This cross-sectional study was conducted to describe the epidemiology of epilepsy in Guaymi Indians residing in Changuinola, a small town on Panama's Caribbean coast near Costa Rica. We randomly selected households and attempted to enroll all residents aged less than or equal to 1 year; 337 eligible subjects agreed to participate (93% response rate). We administered a standard neurologic disease screening examination to all subjects and, if any abnormality was found, we administered a standard neurologic evaluation. We detected 19 cases of active epilepsy; the mean age at onset was 12 years, and generalized tonic-clonic seizures were the most common diagnosis (10 of 19, 53%). The prevalence of active epilepsy among Caribbean coastal Guaymi (57/1000) is considerably greater than that in lower class Panama City populations (22/1000) or in other parts of the world. To identify risk factors for epilepsy, we collected epidemiologic data and serum (for Cysticercus antibody) from subjects with active epilepsy and from 44 age/sex-matched controls. Significantly more cases (47%) than controls (6%) had other family members with epilepsy (relative risk, RR = 14); 44% of cases and 13% of controls reported a history of febrile seizures during childhood (RR = 6).
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