crypticsymbol.com guide to Epilepsy books

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Epilepsy

Epilepsy is a common chronic neurological disorder that is characterized by recurrent unprovoked seizures.[1][2] These seizures are transient signs and/or symptoms due to abnormal, excessive or synchronous neuronal activity in the brain.[3] About 50 million people worldwide have epilepsy at any one time.[4] Epilepsy is usually controlled, but not 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 [5][6]. 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 a group of syndromes with vastly divergent symptoms but all involving episodic abnormal electrical activity in the brain.

Epilepsies are classified in five ways:

In 1981, the International League Against Epilepsy (ILAE) proposed a classification scheme for individual seizures that remains in common use.[7] This classification is based on observation (clinical and EEG) rather than the underlying pathophysiology or anatomy and is outlined later on in this article. In 1989, the ILAE proposed a classification scheme for epilepsies and epileptic syndromes.[8] This can be broadly described as a two-axis scheme having the cause on one axis and the extent of localisation within the brain on the other. Since 1997, the ILAE have been working on a new scheme that has five axes: ictal phenomenon, seizure type, syndrome, etiology and impairment.[9]


The article above is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Epilepsy".