Participants have been administered informed consent, taken medical history and performed a physical examination, and completed MRI scans at baseline visit. This study only comprises the follow-up research procedure.
After the MRI scans, all included patients were treated at the headache center by headache specialists according to their clinical experience. The follow-up time points will be 3 months, 12 months, 24 months after baseline MRI scans. The investigator will interview the patients by telephone to assess their headache features (duration, frequency, severity, accompany symptoms, migraine days per months, moderate to severe headache days per month, medications being used…) and Patient Health Questionnaire 9 Depression Scale (PHQ-9), Generalized Anxiety Disorder Assessment 7-item Scale (GAD-7), quality and patterns of sleep using Pittsburgh Sleep Quality Index (PSQI), and functional disability caused by migraine using the Migraine Disability Assessment Scale (MIDAS) within the last 10 days at each time point.
