Colds and coughs that are mild will not affect the EEG test in most cases, but it depends on the degree of the cold to determine whether it has any effect on the EEG results.
Generally, a runny nose and cough have no effect on the EEG results; however, if there is fever in the cold and the body temperature is high, the EEG will be affected to a certain extent.
In addition, if the cold causes viral meningitis or viral encephalitis, the brain tissue will be changed to a certain extent, which will have an effect on the EEG results.
Therefore, EEG should be performed according to your condition and the doctor’s recommendation.