Abstract
Epilepsy is a symptom of central nervous system dysfunction, not a specific disease. Epileptic seizures may occur as a complication of hereditary or acquired disease of the nervous system, such as Tay-Sachs disease, head injury, or infectious meningitis; of systemic disease such as metastatic cancer, or lupus erythematosus; or metabolic derangements such as hypo-calcemia or hyponatremia (which may also play a role in seizures accompanying renal or hepatic disease). Drug toxicity may also be a cause of seizures. Patients who recover from an acute illness such as CNS infection may suffer from persistent epilepsy. In the case of most of the approximately 2 million people with epilepsy in the USA (10% have more than 1 seizure per month), however, no definite cause for their illness can be found.
Published Version
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