A woman complains of severe abdominal and pelvic pain around the time of menstruation that has gotten worse over the last 5 years. She also complains of pain during intercourse and has tried unsuccessfully to get pregnant for the past 18 months. These symptoms are most likely related to

A. Secondary dysmenorrhea: Although secondary dysmenorrhea involves painful menstruation caused by pelvic pathology, it is a broad term. Endometriosis is a specific cause of secondary dysmenorrhea, but the additional symptoms of infertility and dyspareunia suggest a more defined diagnosis. B. Primary dysmenorrhea: Primary dysmenorrhea typically begins during adolescence and is caused by excessive prostaglandin production leading to uterine contractions. It does not usually worsen over time or cause infertility and pain during intercourse. C. PMS: Premenstrual syndrome is characterized by mood swings, breast tenderness, bloating, and fatigue occurring before menstruation. It does not cause severe pelvic pain, dyspareunia, or infertility, which are hallmark features of endometriosis. D. Endometriosis: Endometriosis occurs when endometrial tissue grows outside the uterus, leading to chronic inflammation, scarring, and adhesions. It commonly causes progressive dysmenorrhea, deep dyspareunia, chronic pelvic pain, and infertility, aligning closely with this patient’s symptoms.