How does secondary dysmenorrhea cause menstrual cramps?

How does secondary dysmenorrhea cause menstrual cramps?

Menstrual pain from secondary dysmenorrhea is a result of problems with the reproductive organs. Conditions that can cause cramping include:

• Endometriosis: A condition in which the tissue lining the uterus (the endometrium) is found outside of the uterus. Because these pieces of tissue bleed during your period, they can cause swelling, scarring and pain.
• Adenomyosis: A condition where the lining of the uterus grows into the muscle of the uterus. This condition can cause the uterus to get much bigger than it should be, along with abnormal bleeding and pain.
• Pelvic inflammatory disease (PID): An infection caused by bacteria that starts in the uterus and can spread to other reproductive organs. PID can cause pain in the stomach or pain during sex.
• Cervical stenosis: Narrowing of the cervix, or the opening to the uterus.
• Fibroids (benign tumors): Growths on the inside, outside or in the walls of the uterus