The comorbidity of endometriosis and migraine was first discovered in 1975, but until now has not been fully acknowledged. Although both diseases share some epidemiological and clinical features, the nature of their relationship remains unclear. Does endometriosis cause headaches? Or is it migraine that makes endometriosis more detectable? Why do they have so much in common? These issues are discussed in the population-based study performed by Taiwanian scientists, which proves that indeed „women with endometriosis are more likely to suffer from migraines” (1). Read full text »