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Epilepsy may develop even though you do not have any risk factors (things that increase your risk). A cause cannot always be identified. This is especially true in many forms of childhood epilepsy. For some people, epilepsy can result from a tumor, infection, or damage to the brain.
Children and older adults are most likely to develop epilepsy, but it can start at any age. It is possible that epilepsy may run in families. But you do not have to have a family history to develop epilepsy.
Epileptic seizures occur when abnormal bursts of electricity in the brain briefly upset normal brain function. It's not always clear what triggers the bursts of abnormal electrical activity.
Conditions that can cause seizures include:
Tumors, scar tissue from injury or disease, or abnormal brain development may damage a specific area of the brain and cause partial seizures. But you may not have any of these conditions and still develop epilepsy.
eMedicineHealth Medical Reference from Healthwise
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