Headache
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To examine factors associated with social, occupational, and psychological burden of common primary headache (migraine and tension-type headache). ⋯ The number of days per month with headache is a key determinant of headache-related burden in those attending specialty clinics. Frequent (chronic) headache is associated with significantly higher psychopathology scores and general social impairment, but the direction of this relationship is not clear. Those with migraine and chronicity are the most impaired.