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How is epilepsy diagnosed?

Epilepsy is diagnosed by a description of the seizure from the patient and a witness. When someone first has a seizure, tests may be ordered to check for other conditions such as low blood sugar and low sodium levels that can cause similar seizures. A CT scan of the brain is often ordered to check for any underlying physical problems. An electroencephalography study (EEG) is also performed. EEG measures electrical activity of the brain and can support the diagnosis. A normal result on EEG does not rule out epilepsy, and several studies may be required.

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About this article

Author: Dr Nikki Wallis PhD, BSc
First answered: 16 Oct 2014
Last reviewed: 14 May 2019
Rating: 4.8 out of 5
Votes: 30 (Click smiley face below to rate)
Category: Multiple sclerosis

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