Abstract: The abnormal bleeding that can accompany endometriosis may affect the marital relationship of niddah observant couples. Pain that might be confused with premenstrual symptoms can also affect halachic observance. When scheduling diagnostic procedures, the woman's halachic status should be considered as much as possible. If prescribing hormonal therapy, the impact of breakthrough bleeding should be remembered.
Discussion: The pelvic pain from endometriosis has been shown to have a significant psycho-social impact on many women.  For the niddah observant woman, the abnormal uterine bleeding that can accompany this condition may have a marked impact as well.  Each type of menstrual abnormality can have ramifications for the niddah observant woman. Prolonged menstrual periods prolong the time a woman is in the niddah status. Each additional day (even partial) of minimal bleeding is another day the couple must wait until they are physically reunited. While premenstrual spotting may have little clinical significance, for the niddah observant woman premenstrual spotting can add additional days of niddah prior to menses every month.
Irregular bleeding, such as inter-menstrual or mid-cycle bleeding or spotting related to endometriosis, generally poses the greatest problem for the niddah observant woman. Halachically significant bleeding during the seven clean days will require her to begin a new week of examinations and counting before she can immerse. If this phenomenon repeats itself, she may not succeed in getting to the mikveh immersion stage until her next regular menses commence, and months may pass before physical contact between husband and wife is permitted.
Other symptoms of endometriosis can also negatively affect the halacha observant woman. The pain from this condition may lead a woman to assume that her menses are about to begin and proscribe relations at that time as well.
A woman with endometriosis in the vagina or vaginal cervix is likely to experience post-coital bleeding  or find stains on her bedikah cloths. In these circumstances, even minute stains are halachically significant and can lead to prolonged periods of niddah, if not even more severe halachic implications regarding the viability of the marriage. Endocervical bleeding is particularly challenging due to the controversy regarding the halachic status of the cervix and its ramifications for the establishment of niddah status.
Women with endometriosis often undergo diagnostic and therapeutic interventions and hormonal treatments. The timing of surgical procedures in this population is important. If the procedure will render her niddah, a woman is likely to prefer that it be done close to her expected time of niddah. If the procedure will cause bleeding but does not cause sufficient uterine opening to render her niddah, then she is likely to prefer not to have it performed during her seven clean days, when any bleeding could create halachic complications. These considerations are discussed further in the article on gynecological procedures. Forms designed to assist the woman in transmitting medical information to a halachic authority before and after a procedure are available on this site. When using hormonal treatments for this condition, the impact of breakthrough bleeding side effects is important as well.
It is important to remember than not every spot will render a woman niddah. Therefore, prior to undertaking medical therapy for a woman whose chief complaint is spotting only, a halachic authority should be consulted to determine if halachic interventions alone can help her avoid the niddah status. If this does not work and hormonal intervention is recommended, the impact of breakthrough bleeding from this medication should be remembered.
Implications for Patient Care: Endometriosis poses additional challenges for the niddah observant woman.
By understanding the potential implications of this condition on the niddah observant woman's quality of life, and being willing to address her concerns, the health care provider can be of much assistance to this patient population.
Proper coordination of efforts between the woman's health care provider and her particular halachic authority can maximize the provision of appropriate care.
 Vercellini P, De Giorgi O, Aimi G, Panazza S, Uglietti A, Crosognani PG. Menstrual characteristics in women with and without endometriosis. Obstetrics and Gynecology 1997;90(2):264-268.
 Culley L1, Law C, Hudson N, Denny E, Mitchell H, Baumgarten M, Raine-Fenning N. The social and psychological impact of endometriosis on women's lives: a critical narrative review. Hum Reprod Update. 2013;19:625-39.
 Doshi J, Doshi S, Sanusi FA, Padwick M. Persistent post-coital bleeding due to cervical endometriosis. Journal of Obstetrics and Gynaecology 2004;24(4):468-469.
 Brown J, Farquhar C. Endometriosis: an overview of Cochrane Reviews. Cochrane Database Syst Rev. 2014 Mar 10;3:CD009590. doi: 10.1002/14651858.CD009590.pub2.
Users of Internet filtering services: This site discusses sensitive subjects that some services filter without visual indication. A page that appears 100% complete might actually be missing critical Jewish-law or medical information. To ensure that you view the pages accurately, ask the filtering service to whitelist all pages under jewishwomenshealth.org.