Fibroids are a common yet often misunderstood health condition affecting women, particularly during their reproductive years. While the term “fibroids” may sound concerning, they are usually non-cancerous and manageable with proper care and treatment. In this guide, we’ll explore what fibroids are, their symptoms, causes, treatment options, and how women’s health scans can play a crucial role in early detection.
What Are Fibroids?
Fibroids, medically known as uterine fibroids or leiomyomas, are benign (non-cancerous) tumours that develop in or around the uterus. They are made of muscle and fibrous tissue and can vary in size from a pea to a melon. In rare cases, fibroids can become very large and distort the uterus’s shape.
Types of Fibroids
Fibroids are classified based on where they develop in the uterus:
- Intramural Fibroids:
- Located within the muscular wall of the uterus.
- The most common type.
- May cause heavy periods and pelvic pain.
- Subserosal Fibroids:
- Grow on the outer surface of the uterus.
- Can press against surrounding organs like the bladder or bowel.
- May cause back or leg pain due to nerve pressure.
- Submucosal Fibroids:
- Develop inside the uterine cavity.
- Can cause heavy menstrual bleeding and fertility issues.
- Pedunculated Fibroids:
- Grow on a stalk inside or outside the uterus.
- Can twist, causing severe pain.
How Common Are Fibroids? (UK Statistics)
Fibroids are very common, affecting approximately 1 in 3 women aged 16-50 in the UK, according to the NHS. Studies estimate that up to 70% of women will develop fibroids at some point in their lives. Women of African-Caribbean heritage are particularly at risk, with a 2-3 times higher prevalence and a greater likelihood of developing larger or multiple fibroids earlier in life.
What Causes Fibroids?
While the exact cause of fibroids is unknown, several factors are believed to contribute:
- Hormonal Imbalance: High levels of oestrogen and progesterone stimulate fibroid growth.
- Genetics: A family history of fibroids increases the risk.
- Age: Most common in women aged 30-50, shrinking after menopause.
- Ethnicity: Black women are more prone to developing fibroids.
- Lifestyle Factors: Obesity, a poor diet, and high alcohol consumption can increase the risk.
Symptoms of Fibroids
Not all fibroids cause symptoms, but when they do, the most common include:
- Heavy or prolonged periods (menorrhagia).
- Pelvic pain or pressure.
- Frequent urination due to pressure on the bladder.
- Constipation if fibroids press on the rectum.
- Lower back pain or leg pain due to nerve compression.
- Pain during intercourse.
- Fertility issues or recurrent miscarriages.
The severity of symptoms depends on the size, number, and location of the fibroids.
How Are Fibroids Diagnosed?
Diagnosing fibroids usually involves:
- Pelvic Examination: To check for an enlarged uterus.
- Ultrasound Scan: Provides a clear image of the uterus to detect fibroids.
- MRI Scan: Used in complex cases to determine the size, location, and number of fibroids.
- Hysteroscopy: Involves inserting a small camera into the uterus to check for submucosal fibroids.
Treatment Options
Treatment depends on the severity of symptoms, size, and location of the fibroids, and whether a woman plans to have children. Common treatments include:
1. Medications
- Hormonal Treatments: Including birth control pills and hormonal IUDs.
- Gonadotropin-Releasing Hormone (GnRH) Agonists: Temporarily shrink fibroids before surgery.
- Non-Hormonal Medications: To manage pain and heavy periods.
2. Non-Surgical Procedures
- Uterine Artery Embolisation (UAE): Cuts off the fibroids’ blood supply, causing them to shrink.
- Endometrial Ablation: Removes the uterine lining to reduce bleeding.
3. Surgical Treatments
- Myomectomy: Removes fibroids while preserving the uterus.
- Hysterectomy: Complete removal of the uterus; recommended in severe cases.
- MRI-Guided Focused Ultrasound: A non-invasive treatment that targets fibroids using high-intensity ultrasound waves.
Why a Women’s Health Scan Is Important
A Women’s Health Scan, such as a pelvic ultrasound, is essential for detecting fibroids, even if there are no noticeable symptoms. These scans can:
- Confirm the Presence of Fibroids: Even small, symptomless fibroids can be identified.
- Assess Size and Location: Key for deciding the best treatment approach.
- Monitor Fibroid Growth: Especially important for women with a history of fibroids.
- Guide Treatment Planning: Early detection helps avoid complications like anaemia, fertility issues, and severe pelvic pain.
Fibroids are a common yet manageable health condition. Understanding the risks, recognising the symptoms, and seeking medical advice can make a significant difference. If you are experiencing heavy periods, pelvic pain, or other related symptoms, consider scheduling a Women’s Health Scan for early detection and peace of mind.
For more information, consult the NHS fibroids page or speak with your healthcare provider.

