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Doctor insights on: Causes Of Abnormal Eeg

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What could cause an abnormal eeg?

What could cause an abnormal eeg?

Too many causes: The eeg is a measure of the electrical activity of the brain. The brain activity may run rough due to lack of sleep, medications, illness, drugs, brain damage, tumors, malformations, etc. Many findings on eeg are without explanation. Specific patterns may indicate a specific disease condition or be associated with a specific genetic disorder. Children can have strange but benign abnormalities. ...Read more

Dr. Jeffrey Cohen
381 doctors shared insights

Eeg (Definition)

An electroencephaolgram (eeg) is a test that uses wires on the scalp to measure electrical activity produced by the brain. It is used to assess cerebral activity, and can be very helpful in the diagnosis and treatment of seizures as well ...Read more


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What are causes of abnormal EEG results?

EEGs are hard: An abnormal eeg can mean many things. Intermittent changes in eeg, like theta discharges or spikes, can be associated with epileptic seizures or other intermittent symptoms like migraine. Continuous changes, like slow background, can be an effect of drugs or internal disorders like liver or kidney disease. Changes in one spot of the head could mean damage like stroke or tumor. ...Read more

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Can a severe reaction (such as swelling& high fever) to a whooping cough shot in the 50's cause an abnormal EEG and seizures in later life?

Can a severe reaction (such as swelling& high fever) to a whooping cough shot in the 50's cause an abnormal EEG and seizures in later life?

Pertussis vaccine: This would be unlikely, but anything is possible. A very rare yet serious side effect associated with this vaccine is the occurrence of seizures. The cdc reports seizures in association with the vaccine (although not necessarily causative) in one child out of 14, 000 who are immunized. This can lead to coma, brain damage and even death, but these side effects usually occur shortly after. ...Read more

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Can lamictal cause abnormal EEG results?

Yes: Although Lamictal is used to treat epilepsy, a condition characterized often by abnormal eeg, it does affect the brain's electrical activity. As such it certainly does have the potential to change the eeg, just as does any other anti-epileptic drug/. ...Read more

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My 5yr old son has had two abnormal EEG's. It's in one area of his brain, could a tumor be the cause?

My 5yr old son has had two abnormal EEG's. It's in one area of his brain, could a tumor be the cause?

Needs evaluation.: EEGs are done when one suspects seizure activity. Focal areas of seizure activity, determined by abnormal EEG may need further testing in the form of scans of the brain. You should consult a doctor/pediatric neurologist to look further into this. This is not alarming but needs further tests at least to disprove such diagnosis. ...Read more

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What would make a mildly abnormal eeg?

What would make a mildly abnormal eeg?

Many causes: There are many causes of a mildly abnormal eeg from sleepiness (which can look like slowing) to medications, to medical problems causing a confusional state (delirium) to stroke and so on. Mildly abnormal eeg's are also sometimes seen in people without a definite neurological problem. ...Read more

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What is the next step after having an abnormal eeg?

Consult a Neurolgist: If you have an abnormal eeg, it depends on how abnormal it is, and what is your other medical and neurolgic history. Really only a specialist should advise you what your next step is. It might be medicine, it might be just watching things. ...Read more

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Do they need to catch the spike in the abnormal EEG in order to do anything about it?

Its helpful: Localization of the source of seizures and assessment of a medications ability to prevent clinical seizures can be gleaned from a single eeg study. Epilepsy is a clinical diagnosis, one best handles by a trusted epileptologist. ...Read more

Dr. Shari Jackson
24 doctors shared insights

Abnormal Eeg (Definition)

Abnormal EEG (electro-encephalogram) is a test result in which the EEG recording of the brain's electrical activity shows patterns that are not normal, or that are known to be signs of conditions such as seizures (convulsions, ...Read more