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Seizures are a symptom of epilepsy. Seizures (fits, convulsions) are episodes of disturbed brain function that cause changes in neuromuscular function, attention, or behavior. They are caused by abnormally excited electrical signals in the brain.
Some types of epileptic seizures can give you a severe headache. Read more. An epileptic seizure can interrupt your heart rhythm. In the long term, epilepsy increases risk of heart disease and stroke.ome people feel an aura, or a feeling of euphoria or doom, right before having a seizure. Other pre-seizure symptoms include changes to sight, hearing, or smell perception. In a simple focal seizure, symptoms depend on which area of the brain is involved. The seizure may be accompanied by nausea or sweating.