What Is an Imperforate Hymen and When Does It Need Treatment?
An imperforate hymen is a rare congenital variation in which the hymen completely covers the vaginal opening. Because there is no opening, menstrual blood can become trapped after menstruation begins.
Symptoms may include:
- Absence of menstrual bleeding despite developing other signs of puberty
- Cyclical lower abdominal or pelvic pain
- A feeling of pelvic pressure or fullness
- Difficulty passing urine or bowel symptoms caused by pressure in some cases
- A bulging or bluish appearance of tissue at the vaginal opening
An imperforate hymen is usually identified during adolescence when menstrual periods are expected to begin. A healthcare professional can diagnose it through an appropriate examination and, when necessary, imaging.
Treatment usually involves a minor surgical procedure to create an opening and allow menstrual blood to pass normally. Treatment is generally successful, and an appropriately treated imperforate hymen does not usually affect future fertility.
A microperforate hymen has a very small opening and may cause problems such as difficulty using tampons or menstrual flow that is slower than expected. Treatment may be considered if it causes symptoms.
If you or your child has absent periods with cyclical pelvic pain or other symptoms suggesting an obstructed vaginal opening, arrange an appointment with a gynaecologist.