What Are The Possible Causes For An Abnormal EEG?

What foods can cause seizures?

Stimulants such as tea, coffee, chocolate, sugar, sweets, soft drinks, excess salt, spices and animal proteins may trigger seizures by suddenly changing the body’s metabolism.

Some parents have reported that allergic reactions to certain foods (e.g.

white flour) also seem to trigger seizures in their children..

Can EEG show past seizure activity?

The likelihood of recording a seizure during a routine EEG is small. The EEG generally records brain waves between seizures, called interictal brain waves. These waves may or may not show evidence of seizure activity.

What does a spike on an EEG mean?

sharp wavesSpikes or sharp waves are terms commonly seen in EEG reports. If these happen only once in a while or at certain times of day, they may not mean anything. If they happen frequently or are found in specific areas of the brain, it could mean there is potentially an area of seizure activity nearby.

Can EEG be wrong?

Yes, EEG can be bad for you. The consequences of being misdiagnosed with epilepsy are obvious and serious [9]. When the diagnosis is based largely on an abnormal EEG, no amount of subsequent normal EEGs will ‘cancel’ the previous abnormal one, and the wrong diagnosis is very difficult to undo.

What is a normal EEG result?

Most waves of 8 Hz and higher frequencies are normal findings in the EEG of an awake adult. Waves with a frequency of 7 Hz or less often are classified as abnormal in awake adults, although they normally can be seen in children or in adults who are asleep.

What is a drawback of having an EEG scan?

The main disadvantage of EEG recording is poor spatial resolution. Since measurements are taken at the scalp, the received signal is, essentially, the sum of the electric field (in the direction perpendicular to the scalp) that is produced by a large population of neurons.

Can an EEG detect anxiety?

Increased communication between the amygdala and hippocampus appear to correlate with symptoms of depression and anxiety, in findings that may have treatment implications, new research suggests.

Can EEG show dementia?

An electroencephalogram (EEG) may be done to detect abnormal brain-wave activity. Although the EEG is usually normal in people with mild Alzheimer’s disease and many other types of dementia, EEG abnormalities do occur in delirium and Creutzfeldt-Jakob disease, which is a cause of dementia.

Can an abnormal EEG mean nothing?

An abnormal EEG doesn’t automatically mean that you, for example, have epilepsy. The EEGs of babies and young children can often record irregular patterns that don’t mean anything, or the irregularities may flag previously diagnosed neurological conditions such as cerebral palsy.

What happens if EEG is abnormal?

An abnormal EEG means that there is a problem in an area of brain activity. This can offer a clue in diagnosing various neurological conditions. Read 10 Conditions Diagnosed With an EEG to learn more. EEG testing is one part of making a diagnosis.

What seizures do to the brain?

A seizure is a sudden, uncontrolled electrical disturbance in the brain. It can cause changes in your behavior, movements or feelings, and in levels of consciousness. If you have two or more seizures or a tendency to have recurrent seizures, you have epilepsy.

Do seizures show up on MRI?

An MRI uses powerful magnets and radio waves to create a detailed view of your brain. Your doctor may be able to detect lesions or abnormalities in your brain that could be causing your seizures.

Can an EEG be misread?

Unlike a CT or MRI scan that is misread, simply repeating it and calling it normal will not cancel the abnormal one, because the EEG is not a test of anatomy and is a sample in time. Only re-review of the actual “abnormal” sample can cancel the misdiagnosis and undo the harm.

What can an EEG reveal?

EEG results show changes in brain activity that may be useful in diagnosing brain conditions, especially epilepsy and other seizure disorders. An electroencephalogram (EEG) is a test that detects electrical activity in your brain using small, metal discs (electrodes) attached to your scalp.

What is abnormal brain activity?

Abnormal electrical activity in the brain can cause seizures. When a person has repeated seizures, this condition is called epilepsy. Diagnosis and treatment of these disorders often requires consultation with a neurologist.

What are the symptoms of a neurological problem?

Signs and symptoms of nervous system disordersPersistent or sudden onset of a headache.A headache that changes or is different.Loss of feeling or tingling.Weakness or loss of muscle strength.Loss of sight or double vision.Memory loss.Impaired mental ability.Lack of coordination.More items…

What does slow brain waves on an EEG mean?

Focal slow wave activity on the EEG is indicative of focal cerebral pathology of the underlying brain region. Slowing may be intermittent or persistent, with more persistent or consistently slower activity generally indicating more severe underlying focal cerebral dysfunction.

Can stress cause seizures?

Areas of the brain important for some types of seizures, for example partial seizures, are the same areas of the brain involved in emotions and responding to stress. Stress can cause problems sleeping which is also a seizure trigger. Chronic stress can lead to anxiety or depression.

What triggers seizure?

Triggers are situations that can bring on a seizure in some people with epilepsy. Some people’s seizures are brought on by certain situations. Triggers can differ from person to person, but common triggers include tiredness and lack of sleep, stress, alcohol, and not taking medication.

Can EEG detect tumor?

EEG can also detect abnormal brain waves after a head injury, stroke, or brain tumor. Other conditions such as dizziness, headache, dementia, and sleeping problems may show abnormal brain patterns. It can also be used to confirm brain death.