Epilepsy after missile wounds of the head.

Two hundred and thirty-seven Nigerians with missile head injury were treated at the University College Hospital (UCH) Ibadan, between July 1964 and January 1970. Among the 165 of these patients who have been followed up for over a year, the incidence of epilepsy has been 11·4%, 18·75%, and 33·3% in a follow-up period ranging between one to two years, two to three years, and three to five years respectively.Wounds in the parietal region, especially those at the vertex, were followed by epilepsy more frequently than injuries elsewhere on the head. Of these wounds, tangential skull injuries and through-and-through brain injuries were more epileptogenic than others.Fits which occurred within a fortnight of wounding have been designated as `early' fits, and they appeared to differ in their aetiology from `late' fits.