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Pregnancy: what is Asherman Syndrome?

Asherman Syndrome FAQs

What is Asherman Syndrome?

Asherman syndrome is when scar tissue exists inside the womb or cervix.

Generally, this scar tissue doesn’t affect the woman’s health, however, it may prevent conception. Additionally, in rare cases, Asherman Syndrome could affect the development of the fetus/baby.

How does Asherman Syndrome occur?

Asherman Syndrome occurs more commonly in women who have undergone surgeries that required the uterus to be emptied. These surgeries are performed when there is retained placenta and/or after a miscarriage. However, the syndrome is relatively rare and mostly presents when these type of procedures have been carried out more than once.

What are the signs of Asherman Sydrome?

Lots of women will not have any obvious signs of Asherman Syndrome, particularly if the woman has already reached menopause. If the woman is still menstruating, then there may be obvious changes to the menstrual cycle. Periods may become lighter or may stop. Or in some cases periods can become more painful. It is important to note that the incidence of scarring does not relate directly to the symptoms experienced. For example, a woman who has very little scarring may notice that her periods stop. Whereas a woman with more significant scarring may not notice any symptoms whatsoever.

In many cases, women experience a reduced menstrual flow that lasts for a number of cycles. Some women feel as if they are just about to have their period, experiencing the various symptoms of PMT, but then they do not menstruate.

When the scarring happens during a full-term birth, then the woman will not observe any change such as lighter periods, until she has weaned her baby and her regular cycle has returned.

How is Asherman Syndrome diagnosed?

Hysteroscopy The only procedure that currently allows for a full assessment and accurate diagnosis of Asherman Syndrome is a hysteroscopy. This is a procedure that involves a small telescope being passed into both the uterus and cervix. This telescope makes it possible for the gynaecologist to be able to view all of the surfaces within the cervix and uterus, to identify if scar tissue is present.

Understanding your medical history Your physician will also ask about your medical history. The majority of women that present with Asherman Syndrome has a medical history of abnormal bleeding, either after giving birth or having had a miscarriage and have undergone a D & C (curette) or a similar procedure to remove retained material from the uterus.

Sonography or ultrasound is not a fail-safe method of diagnosis, as the scarring is frequently not visible. When scarring presents in the cervix it is even more difficult to diagnose using ultrasound. Therefore it is important to mention that normal ultrasound is not a guaranteed method to entirely rule out the presence of Asherman Syndrome.

What are the

Treatment Options for Asherman Syndrome?


Asherman Syndrome Treatment Options

Although it may be possible to minimise scarring, this is a lifelong condition. Treatment may improve the scarred tissue sufficiently in order to allow the woman to be able to become pregnant.

If the woman does not wish to have more children, and her symptoms are not painful, then there is no reason to seek treatment.

The scar tissue is not harmful in itself. As mentioned, you may experience reduced menstruation or no periods.


During a hysteroscopy a gynaecologist can see and remove scar tissue.

Hormonal therapies

Oestrogen can be used to stimulate the growth of the uterine lining. In many cases this will be prescribed after a surgical treatment to reduce the scarring of Asherman Syndrome.

Other medications

When surgery is required, antibiotics are used to reduce the risks of infection.


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What Our Patients Say

Gráinne Macken

This is my second visit to Merrion Fetal, I was very pleased on both occasions. Lovely quiet waiting room, appointment was on time. The 20-week scan is very detailed we enjoyed watching our baby on the large TV screen. We got some beautiful photos. The nurse was very pleasant and talked us through all the measurements and anatomy. I would highly recommend this scanning clinic.”

Áine Gibney

I had the best experience at the Merrion Fetal Health clinic for my 20-week big scan. The staff were so friendly and so nice and the lovely lady who did my ultrasound scan was amazing. She was so thoroughgoing to absolutely everything and gave me such reassurance on how my baby was growing and developing. I would recommend any Mother to be to attend here if you are looking for a comfortable, reassuring and super pleasant experience.”

Linda O'Sullivan

Highly recommend! We had an early scan due to a little scare at the start of pregnancy and then another at 12 weeks to make sure all was good again. Helen who was scanning on both days was fantastic. We felt totally relaxed and un-rushed while she took her time finding the best angle of baby to get us the clearest pictures as keepsakes all while making sure everything was perfect with baby. She reassured us throughout and I can honestly say it was the best money we ever spent getting both scans done.

Please let Helen know we are 18 weeks now and flying along Highly recommend!



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All articles on the blog and website are intended as information only. Please do not consider any of the information provided here as a substitute for medical advice. At all times seek medical advice directly with your own doctor and medical team.


This website was formerly Merrion Fetal Health. The clinic has undergone a rebrand and is now known as Merrion Ultrasound.