Epilepsy

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Epilepsy (from the Ancient Greek ἐπιληψία (epilēpsía) — "to seize") is a common chronic neurological disorder characterized by recurrent unprovoked seizures.[1][2] These seizures are transient signs and/or symptoms of abnormal, excessive or synchronous neuronal activity in the brain.[3] About 50 million people worldwide have epilepsy, with almost 90% of these people being in developing countries.[4] Epilepsy is more likely to occur in young children, or people over the age of 65 years; however, it can occur at any time.[5] As a consequence of brain surgery, epileptic seizures may occur in recovering patients.

Epilepsy is usually controlled, but cannot be cured with medication, although surgery may be considered in difficult cases. However, over 30% of people with epilepsy do not have seizure control even with the best available medications.[6][7] Not all epilepsy syndromes are lifelong – some forms are confined to particular stages of childhood. Epilepsy should not be understood as a single disorder, but rather as syndromic with vastly divergent symptoms but all involving episodic abnormal electrical activity in the brain.

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