Cause
Pelvic organ prolapse is usually caused by damage to
the tissues (muscles, ligaments, and connective tissue) that support the pelvic
organs. Damage or stretching of these tissues allows the organs to move out of
their normal positions, causing them to press against (and sometimes move) the
inside walls of the vagina.
Having a baby makes it more likely that you will have pelvic organ
prolapse later. Vaginal childbirth has been strongly linked to weakened and
stretched support structures in the pelvic area. This loss of support is the
biggest cause of pelvic organ prolapse. Having a cesarean section, on the other
hand, seems to be less strongly linked to pelvic organ prolapse.1
(But having a cesarean section may lead to other problems. For more
information, see the topic
Cesarean Section.)
Another cause of reduced support in the pelvis is lower levels of
the hormone
estrogen. Estrogen levels are lower during and after
menopause. The lower levels of estrogen in the body
mean less
collagen, a protein that helps the pelvic connective
tissues stretch and return to their normal positions.
Pelvic organ prolapse can also occur after surgical removal of the
uterus (hysterectomy) for another health problem, such as
endometriosis. Removal of the uterus can sometimes
leave the other organs in the pelvic area with less support.
Other conditions that may cause pelvic organ prolapse
include:
- Obesity, which
can lead to long-term pressure within the abdomen.
- Smoking and/or
lung disorders, which are often causes of chronic
coughing.
- Conditions affecting the spinal cord, such as
muscular dystrophy,
multiple sclerosis, and spinal cord injury, that cause
paralysis of the muscles of the pelvic floor.