After approval from the institutional review board, prospective cohort analysis of patients recruited from our RCVS database registry was conducted. Validated questionnaires were mailed to the patients on a one-time-basis. The forms included: Headache screening questionnaire, Headache Impact Test-6 (HIT-6), Barthel index (BI), Patient Health Questionnaire (PHQ-9) and European QoL Questionnaire (EQ-5D-5L).