Final answer:
Epilepsy is a disease that causes seizures and can be caused by infection, brain injury, or a tumor. Seizures can often be controlled with medicine.
Step-by-step explanation:
Epilepsy is a disease that causes seizures. A seizure is a period of lost consciousness that may include violent muscle contractions. It is caused by abnormal electrical activity in the brain. The cause of epilepsy may be an infection, a brain injury, or a tumor. The seizures of epilepsy can often be controlled with medicine.