It can also be used to confirm brain death.Ĭan you wash your hair the day of an EEG? The test is used to help diagnose conditions such as seizures, epilepsy, head injuries, dizziness, headaches, brain tumors and sleeping problems. 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.Īn electroencephalogram (EEG) is a noninvasive test that records electrical patterns in your brain. If these happen only once in a while or at certain times of day, they may not mean anything. Sharp wavesSpikes or sharp waves are terms commonly seen in EEG reports. While these drinks can sometimes change the EEG results, they almost never interfere significantly with the interpretation of the test. What happens if you have caffeine before an EEG?ĭrinks containing caffeine, such as coffee, cola, and tea. These waves may or may not show evidence of seizure activity. The EEG generally records brain waves between seizures, called interictal brain waves. The likelihood of recording a seizure during a routine EEG is small. You may also be given a sedative to help you relax and sleep before the test begins. Your doctor may ask you to sleep as little as possible the night before the test if you have to sleep during the EEG. When do you need an EEG after a seizure?Īvoid eating or drinking anything containing caffeine for at least eight hours before the test.How long does it take for EEG results to come back?.What is a drawback of having an EEG scan?.Can you wash your hair the day of an EEG?.What happens if you have caffeine before an EEG?.
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