No previous studies have evaluated differences in experimental pain intensity vs. pain unpleasantness in migraineurs vs. controls. As migraine pain uniquely involves many altered sensory phenomenon (e.g., photophobia, phonophobia), it cannot be assumed that responses to experimental pain in migraine will be the same as other clinical pain syndromes. Further, different clinical pain syndromes have distinct responses to pain intensity vs. pain unpleasantness.