[EEG study of cervical migraine]

The authors carried out serial EEG investigations in 60 cases of cervical migraine. They demonstrated in 30% of cases normal EEG tracings; in the remaining 70% of cases the tracings were abnormal. The analysis of the latter cases suggests that there are two pathogenetically different groups of cervical migraine, i.e. "idiopathic" cervical migraine with normal or changed background activity in EEG and "symptomatic" cervical migraine with permanent bitemporal or disseminated changes of cerebral bioelectric activity.