Epilepsy - Seizure First Aid: A seizure is an electrical disturbance in the brain that can cause confusion, muscle jerking, and loss of memory. A person who suffers more than one seizure is said to have epilepsy. Poorly controlled seizures can lead to injuries, limitations at school or work, and an inability to drive. If you are with someone who has a seizure, it is important to have a general idea of what to do, and what things to avoid. Also, be aware of things to look for that would require calling emergency medical services.