Yes and no. Head injuries that result from sports or other accidents can cause epilepsy, but they are often preventable. Help avoid sports-related and bike injuries to the head by wearing a helmet. Seat belt use can help prevent head injuries associated with motor vehicle accidents. However, epilepsy can also occur without injury, or it can be hereditary or genetic. In fact, in most cases, the causes are unknown, and many researchers are still exploring the reasons why some people have epilepsy.