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Top 8 Causes of Vaginal Bleeding After Sex

What Causes Post-Coital Bleeding?

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Updated August 14, 2014

Written or reviewed by a board-certified physician. See About.com's Medical Review Board.

You've just finished making love, and you're in that pleasant dream-like state when you go to the bathroom and discover that you are bleeding. Nothing can bring you back to reality faster than vaginal bleeding after sex. Post-coital bleeding can occur for a number of reasons, and is nothing to take lightly. Here's a look at the top 10 causes of vaginal bleeding after sex:

 

  1. Cervical dysplasia: Cervical dysplasia is precancerous changes of the epithelial cells that line the cervix. Risk increases with multiple sexual partners, sex before age 18, childbirth before age 16, or a past history of STDs. Treatment is usually cryosurgery or conisation.

     

  2. Chlamydia: A bacterial infection that is usually transmitted through sexual activity or contact with semen, vaginal fluid, or blood.

     

  3. Gonorrhea: A usually sexually transmitted disease caused by a bacteria. Several pharmaceutical treatments are available.

     

  4. Vaginitis or Cervicitis: Inflammation or swelling and infection of the vagina or cervix. Treatment depends on the cause.

     

  5. Cervical polyps: Cervical polyps are smooth, red or purple, finger-like growths that grow out of the mucus layer of the cervix or the cervical canal. Cervical polyps are extremely fragile, extending out of the cervix, and easily and painlessly removed.

     

  6. Trichomoniasis: A usually sexually transmitted disease caused by protozoan. Can also be passed to newborns during vaginal birth by infected mothers. Although rare, transmission is also possible in tap water, hot tubs, urine, on toilet seats, and in swimming pools. May cause vaginitis.

     

  7. Vaginal yeast infection: An overgrowth of the normal fungi that inhabits the vaginal area. Common symptoms include itching, burning, and an odorless, white, cheese-like discharge.

     

  8. Uterine polyps: Uterine polyps occur when the endometrium overgrows causing these protrusions into the uterus. It is extremely rare for these growths to grow in a way that is either benign or malignant. Women with uterine polyps frequently experience bleeding between periods (metrorrhagia), other symptoms includes vaginal bleeding after sex, spotting, menorrhagia, bleeding after menopause, and breakthrough bleeding during hormone therapy. Hysteroscopic-guided curettage is the preferred treatment, since the normal D&C is basically an unguided procedure that may miss many of the uterine polyps.

Diagnosing vaginal bleeding after sex is usually a matter of exclusion. Any time you experience post-coital bleeding or vaginal bleeding after sex see your physician.

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