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What causes bleeding after intercourse?

Jun 29, 2020 Source: Cainiu Health
Dr. Yan Ying
Introduction
What Causes Bleeding After Intercourse? 1. **Hymenal injury**: The most common cause is hymenal rupture during first-time intercourse. 2. **Genital tract inflammation**: Conditions such as vaginitis or endometritis are frequent causes of postcoital vaginal bleeding. 3. **Vaginal laceration**: This presents with vaginal bleeding, often in large amounts. 4. **Cervicitis**: Chronic cervicitis—including cervical erosion or cervical polyps—may also lead to postcoital bleeding.

Postcoital bleeding—bleeding occurring after sexual intercourse—is a relatively common occurrence in daily life. However, normally coordinated sexual activity should not cause vaginal bleeding in women. Therefore, postcoital bleeding often signals an underlying pathological condition. So, what exactly causes postcoital bleeding? Below, we address this question.

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What Causes Postcoital Bleeding?

1. Hymenal Tear

Postcoital bleeding may result from hymenal injury. The most common scenario is hymenal rupture during first-time intercourse, typically causing bleeding during coitus. Blood loss is usually minimal, and bleeding often stops spontaneously if the tear is minor. However, if the tear coincides with injury to a blood vessel in that area, bleeding may be more substantial, requiring direct pressure for hemostasis—or even medical evaluation and treatment.

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2. Genital Tract Inflammation

Postcoital bleeding may stem from inflammation of the genital tract—for example, vaginitis or endometritis—which are frequent causes of vaginal bleeding following intercourse. Severe inflammation can lead to desquamation of cervical or vaginal epithelium, resulting in bleeding. Additionally, poor healing of vaginal incisions after procedures such as vaginal tumor excision or hysterectomy may predispose individuals to bleeding during intercourse.

3. Vaginal Laceration

Postcoital bleeding may indicate a vaginal laceration. Bleeding typically appears during or immediately after intercourse, is often profuse, fails to stop spontaneously, and may persist as prolonged oozing—characteristic of vaginal laceration. Such injuries may occur due to incorrect or excessively forceful sexual techniques. Vaginal lacerations may also arise in cases of congenital vaginal anomalies, such as longitudinal or transverse vaginal septa or double vagina.

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4. Cervicitis

Postcoital bleeding may be caused by cervicitis. Women with chronic cervicitis—including conditions such as cervical ectropion (formerly termed “cervical erosion”) or cervical polyps—may experience bleeding after intercourse. Prompt medical evaluation and management are recommended. Similarly, acute cervicitis may also manifest with postcoital bleeding.

The above outlines the potential causes of postcoital bleeding. We hope this information is helpful to you.

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