Thick Uterine lining causes

Thick Uterine Lining Causes

The thick uterine lining can be caused by a variety of conditions, including the menstruation or pregnancy.

A hormone called estrogen is responsible to thickening uterine lining each month. However, when the estrogen level is drop down, the lining is released from the uterus and you get your period.

In some cases, uterine lining can be caused by severe pain conditions such as endometrial hyperplasia, endometriosis and a uterine fibroid that requires seeking immediate medical attention.  

Following Are Some Thick Uterine Lining Causes

  • During pregnancy, the uterus expands and it becomes heavier as it accommodates a baby who grows day by day. This allows the baby to take all the nourishment needed and protect from internal and external pressure by a wealth of natural shield. But when you are not pregnant, the hormone levels drop and the thickened lining of the uterus is shed during the menstrual period.
  • The thickened lining of a uterus may be normal in your menstrual cycle. So also some female see their lining thickens as they age.
  • The thick uterine lining can occur if you suffer from endometrium issues such as endometriosis. This is a condition in which the tissue that forms the lining of your uterus grows outside of your uterine cavity, it is often painful.
  • Cancer, fibroids, and polyps can also cause the uterine walls to thicken.

A medical condition behind the Thick uterine lining causes

Endometrial hyperplasia:

Endometrial hyperplasia

Endometrial hyperplasia occurs when the endometrium, the lining of the uterus abnormally thickening in preparation for pregnancy. If the body do not get pregnant then the endometrium will break down and will attempt to shed it as blood. And you will have your normal menstrual period.



Endometriosis is a common and potentially painful problem in women that causes the endometrium tissue to grown outside the uterus, usually inside the pelvic cavity.

This displaced endometrial tissue thickens, break down and bleeds during the menstrual cycle, just like the endometrium inside the uterus does.  Because it is not in a proper location to be removed from the body, the blood from this area can cause an irritation of the surrounding tissue which may become swollen and cause a severe pain. (1

Uterine fibroid:

Uterine fibroidMost of the women have the uterine fibroids issues sometime in their lives. However, they are not aware of it as they themselves cause no symptoms.

Uterine fibroids usually appear during the childbearing years, causing a rubbery, firm mass to appear and grow in the uterus. The fibroids can be undetectable by the human eyes. They can also grow large and may fill the entire uterus and may even weigh several pounds.  (2)

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