Primary Dysmenorrhea and Painful Sex: Canaries in the Coal Mine?

Primary dysmenorrhea and provoked vestibulodynia (PVD) are common pain conditions in young women. The purpose of this study was to document the severity of dysmenorrhea in women with confirmed PVD to further clarify reports of comorbidity. Since central sensitisation (CS) of the nervous system is present in both conditions, diagnosis of either, but especially both conditions, may reflect past chronic stress.

We investigated this comorbidity in a sample of 63 women who met diagnostic criteria for PVD, and a comparison group of 89 women with low sexual desire and arousal but no pain during sex. All women completed questionnaires about the history and severity of their dysmenorrhea.

Of the women with PVD, 28.6% recalled moderate and 34.9% severe dysmenorrhea. For women in the comparison group, these figures were 22.5% and 19.1%, respectively. Women with PVD reported that the periods they experienced as teenagers were more painful, longer, more debilitating, and persistently painful for more years than those recalled by women in the comparison group.

Our findings suggest that the origins of the early-onset CS require serious investigation. Research into the potential to reduce future chronic pain conditions through early effective treatment of primary dysmenorrhea is also needed.