Assessment of Migraine Disability Using the Migraine Disability Assessment (MIDAS) Questionnaire: A Comparison of Chronic Migraine With Episodic Migraine
Abstract
BACKGROUND: Chronic migraine is the most common type of chronic daily headache seen in headache tertiary care centers. Most patients with chronic migraine report their ability to function and feeling of well-being as severely impaired. OBJECTIVE: To measure the headache-related disability of patients with chronic migraine using the Migraine Disability Assessment (MIDAS) Questionnaire, comparing it with that obtained in a control group of patients with episodic migraine. METHODS: The clinical records of 703 patients with chronic daily headache treated in a headache specialty clinic were reviewed to identify 182 with chronic migraine who were evaluated using the MIDAS at their initial visit. Our control group consisted of 86 patients with episodic migraine. RESULTS: Of the 182 patients with chronic migraine, 127 (69.8%) were overusing acute-care medication. Patients were predominantly women (72.5%), with a mean age of 38.3 years. The group with episodic migraine consisted of 59 women (68.6%), with a mean age of 36.1 years. No statistically significant demographic differences were observed between the two groups. The group with chronic migraine had more total headache days over 3 months (66.7 versus 15.5, P<.001), missed more days of work or school (5.3 versus 2.3, P =.0007), had more reduced effectiveness days at work or school (11.9 versus 4.6, P =.0001), missed more days of housework (16.5 versus 3.3, P<.0001), and missed more days of family, social, or leisure activities…
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