What is the most common cause of abnormal uterine bleeding?

thewanderlust878 | Student

There are many common causes of abnormal uterine bleeding. Many of the causes and times that abnormal uterine bleeding happens are in no need of alarm, for many are self-correcting and happen to everyone. Some of the common causes include:

  • bleeding after sexual intercourse
  • between periods
  • after menopause
  • during pregnancy

Abnormal bleeding can happen at any age, but most commonly occurs for young girls (9-16) and older women (50+)

Hope this helps!

sid-sarfraz | Student


  • The first period in a girls life is always abnormal caused by foreign body or trauma.
  • Sexual Abuse


  • The first menstrual period causes irregular bleeding for a few months till a girl's hormonal cycle and ovulation normalizes.
  • Infection
  • Pregnancy
  • Coagulation disorders
  • Malignancy


  • Vaginal spotting can be caused because of abrupt change in hormonal levels
  • Women using hormonal birth control methods 
  • Anovulation
  • Cancer of cervix


  • Thinning of tissues around uterus and vagina
  • Side effects of radiation therapy
  • Infections
  • Use of blood thinning tablets

The most common cause of abnormal uterine bleeding is ANOVULATION.

Anovulation occurs when women skip ovulation, also known as anovulatory cycle. In Anovulation, menstrual cycle is normal but ovulation wont occur. It is common in women in early and late years of menstruation. 

Common causes of anovulation are as follows:-

  • Stress
  • Eating habits
  • Overexertion
loraaa | Student
A kidney stone is a solid piece of material that forms in the kidney out of substances in the urine. Normally, urine contains chemicals that prevent or inhibit the crystals from forming. However, these inhibitors do not seem to work for everyone.   Kidney stones may contain various combinations of chemicals. The four most common types of kidney stones contain:  
  • Calcium
  • Struvite
  • Uric acid
  • Cystine.
monica1028 | Student

What is the most common cause of abnormal uterine bleeding? Endimetriosis is the most common cause of abnormal uterine bleeding in women who are not pregnant. Endimetriosis is eggs the body should have shed during a normal period that have attached themselves to the uterine wall and can cause excessive bleeding, severe to intolerable cramps even infertility. It is not known why the eggs attach themselves to the uterine wall but it can be treated fairly successfully threw surgery if found in the early stages. The surgery is typically done on an out patient basis, two small incisions are made, one in the belly button and one to the left resulting in minimal scaring. A camera is used to see into the uterus threw the hole in the belly button and the second incision is for the tools needed for the procedure. Once the surgeon has identified the area affected he/she gently scrapes the eggs from the walls of the uterus. Healing time for the procedure is usually 2-4 weeks.

pixiedust925 | Student

You can have abnormal bleeding during a pregnancy. But that warrants a vist to the doctor.

Ovulation is another cause.

Contraceptives also contribute to this.

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