Adenomyosis is a medical condition that affects women, especially those who belong to the age group of 30 to 50. This uterine condition is usually harmless in nature. Adenomysosis is rare in women, who have never had a full-term pregnancy. Those who have had children, and those in the childbearing age, are found to be mainly affected by this condition. In most cases, the disease disappears on its own, after menopause.