period painMany women have painful periods. Sometimes, the pain makes it hard to do normal household, job, or school-related activities for a few days during each menstrual cycle. Painful menstruation is the leading cause of lost time from school and work among women in their teens and 20s.

Causes
Painful menstrual periods fall into two groups, depending on the cause:

1. Primary dysmenorrhea
2. Secondary dysmenorrhea

Primary dysmenorrhea is menstrual pain that occurs around the time that menstrual periods first begin in otherwise healthy young women. In most cases, this pain is not related to a specific problem with the uterus or other pelvic organs. Increased activity of the hormone prostaglandin, which is produced in the uterus, is thought to play a role in this condition.

Secondary dysmenorrhea is menstrual pain that develops later in women who have had normal periods. It is often related to problems in the uterus or other pelvic organs, such as:

Endometriosis
Fibroids
Intrauterine device (IUD) made of copper
Pelvic inflammatory disease
Premenstrual syndrome (PMS)
Sexually transmitted infection
Stress and anxiety