Cognitive impairment in patients with severe migraine

A controlled study of a group of patients with severe migraine revealed that they gave a consistently poorer performance on a series of memory and information-processing tests (12 subtests in all). Migraine sufferers were also found to differ from controls significantly on the anxiety, obsessionality and somatic scales of the Middlesex Hospital Questionnaire, although it was considered unlikely that the differences in cognitive performance could be explained by these results.