Adenomyosis also known as adenomyoma is the thickening of uterine walls when the endometrial tissue shifts its position to the outer walls of the uterus. Normally the tissue lies well within the uterus and when it moves outside the muscular walls, it can cause adenomyosis.
The exact cause of adenomyosis is not known.
Some of the common symptoms are heavy menstrual bleeding, bleeding for long term, painful periods and discomfort while having sex. Some women may have pelvic pain while enjoying intercourse. In most of the cases, the disease is asymptomatic (without any symptoms).