What is adenomyosis?
Adenomyosis occurs when the cells that normally line the uterus grow in the layer of muscle in the wall of the uterus. They should not normally be there.
It occurs only in women who are making the female hormone oestrogen. It usually disappears after menopause when oestrogen production drops.
It can cause enlargement of the uterus and heavy periods.
If you have adenomyosis, you might also have a similar condition called endometriosis.
What causes adenomyosis?
It is not certain how or why the uterus-lining cells enter the muscle wall. It is thought that they might enter:
- during surgery
- early in the development of the foetus
- after childbirth when the wall of the uterus is weakened by inflammation.
It sometimes happens after:
- the birth of a baby
- surgery involving the uterus, such as caesarean section or removal of fibroids.
Women with adenomyosis might have:
- heavy periods
- painful periods
- pain during sex
- bleeding between periods
- tiredness from the anaemia caused by blood loss.
The symptoms might be mild, but they can be severe enough to interfere with work and your enjoyment of life.
Your doctor will talk to you and examine you. You might also be asked to have scans. Adenomyosis often takes time to diagnose.
You can ease the symptoms by:
- anti-inflammatory medicines
- warm baths and heat packs
- hormone treatment.
Hysterectomy is an option for women with severe adenomyosis.
Last reviewed: April 2016