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What Is Phenytoin Used For?

Epilepsy and Seizures

Epilepsy is a brain condition that occurs when there are sudden, brief changes in how the brain's electrical system works. These changes in brain activity can lead to a seizure (see Epilepsy Symptoms). Depending on which part of the brain is affected, a seizure may affect the person's consciousness, body movements, emotions, or senses (taste, touch, smell, vision, or hearing).
 
Some people may have only a single seizure during their lives, and one seizure does not mean that a person has epilepsy (see Seizures and Epilepsy). In fact, the term epilepsy refers to a number of different kinds of unprovoked, recurring seizures that happen for a number of different reasons.
 
In over half of all cases, the cause of epilepsy is not known. When the cause of epilepsy is known, it may be one of the following:
 
Epilepsy treatments may include medications (see Epilepsy Medication), surgery (see Epilepsy Surgery), diet changes (see Epilepsy Diet), and biofeedback.
 
There are over 30 different types of seizures that a person with epilepsy may experience. These seizures are generally classified into two main categories -- partial seizures (also known as focal seizures) and generalized seizures.
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Phenytoin Sodium

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