A 36-year-old member asked:
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how accurate are eegs?

2 doctor answers
Dr. Bennett Machanic
51 years experience Neurology
FAIRLY ACCURATE: Eeg recorded over the scalp can help confirm or disconfirm seizure activity. Sometimes, an eeg needs to be continuous, either ambulatory over a few days, or within a hospital observational unit for a few days, as, on occasion the activity may be missed otherwise. However, the eeg is not always perfect, and a doctor may diagnose epilepsy even with a normal eeg ee.
Answered on Sep 28, 2016
Dr. Olav Jaren
18 years experience Neurology
Utility of the EEG: An EEG measures the brain waves. If one is obtained during a seizure, they are diagnostic for seizure. This is much better than seeing a seizure with our eyes. The EEG is also helpful for monitoring brain activity during sleep and alertness, coma and confusion.
Answered on Nov 16, 2016

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Related questions:

A 30-year-old male asked:
Dr. Catherine Willner
34 years experience Neurology
Timing: Eeg's are accurate related to what they can capture when done. If there is no seizure activity during the test, it can be normal. If you have a defi ... Read More
A 30-year-old male asked:
Dr. Mark Rasak
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Maybe but...: Technology and changing criteria for certain diagnosis can confuse some pts with a long standing diagnosis. But seizures are unpredictable. The condit ... Read More
A 21-year-old female asked:
Dr. James Ferguson
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Define accurate: There are some seizure related changes on EEG that are obvious on any study and some that will only appear during a seizure event. Some with a true se ... Read More
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A 30-year-old male asked:
Dr. Melanie Alarcio
32 years experience Pediatric Neurology
It depends: This will depend on what the sleeping pill was and whether the one who read the eeg is aware that the patient had taken a sleeping pill. Sedating medi ... Read More
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7 thanks

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