It is estimated that 1 in 10 women have endometriosis. Endometriosis frequently presents with the symptom of pain including dysmenorrhoea (painful periods), dyspareunia (pain during sexual intercourse), and chronic pelvic or abdominal pain. Endometriosis can cause infertility and for women with subfertility, the prevalence rate ranges from 25% to 40%. Yet the disease is often misdiagnosed or missed altogether, says the Endometriosis Foundation of America (EndoFound). Lack of education and public awareness is part of the reason that endometriosis goes undetected.