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EEG during attacks of common and classical migraine
Cephalalgia : an International Journal of Headache
|June 1, 1981
Summary
Migraine attacks, whether common or classical, rarely show electroencephalogram (EEG) abnormalities. This study found minimal EEG changes in some classical migraine patients, but these were also present outside of attacks.
Area of Science:
- Neurology
- Neurophysiology
Background:
- Migraine is a common neurological disorder.
- Electroencephalography (EEG) is used to study brain activity.
Purpose of the Study:
- To investigate the occurrence of EEG abnormalities during migraine attacks.
- To compare EEG findings in common migraine versus classical migraine.
Main Methods:
- EEG recordings were performed on 21 migraine patients (11 common, 10 classical) during attacks.
- Recordings included resting state, hyperventilation, and photic stimulation.
- Some patients were studied during prodrome and early headache phases.
Main Results:
- No EEG abnormalities were found in common migraine patients.
- Eight out of ten classical migraine patients showed no abnormalities.
- Two classical migraine patients exhibited mild abnormalities during prodrome/early headache, also present in control EEGs.
Conclusions:
- Migraine attacks are infrequently associated with EEG abnormalities.
- EEG is generally not indicative of migraine activity during an attack.