16 Chapter 1 CHARACTERISTICS OF PERIMENSTRUAL MIGRAINE ATTACKS The duration of perimenstrual migraine attacks is ≈20% longer compared to non-perimenstrual attacks.10 Additionally, perimenstrual migraine attacks have higher pain intensity and are associated with reduced pain coping mechanisms. Moreover, there is a higher frequency of recurrences (return or worsening of headache within Figure 3. Attack incidence (migraine with aura versus migraine without aura) during the menstrual cycle, pregnancy and perimenopause.
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