Heavy Periods (Menorrhagia): Causes and Treatment Pathways

Heavy periods, medically known as menorrhagia or heavy menstrual bleeding, are more than an inconvenience. They can disrupt work, sleep, exercise, relationships and everyday plans, while prolonged blood loss may also contribute to iron-deficiency anaemia. A period may be considered unusually heavy when bleeding regularly lasts longer than seven days, requires very frequent changes of sanitary protection, causes flooding or large clots, or prevents you from carrying out normal activities.

Young Woman Experiencing Menstrual Pain Before Specialist Treatment

What can cause heavy periods?

There is no single cause of menorrhagia. Hormonal changes can lead to an overgrowth of the womb lining, particularly during the teenage years, perimenopause or when ovulation is irregular. Structural conditions such as fibroids, adenomyosis, endometrial polyps and, less commonly, abnormalities of the womb lining may also increase bleeding. Other possible contributors include thyroid disorders, bleeding conditions, certain medicines and some contraceptive methods.

The uterus, ovaries and womb lining all play a role in the menstrual cycle.

Symptoms that should prompt an assessment

Arrange a gynaecological assessment if heavy bleeding is persistent, worsening or affecting your quality of life. It is also important to seek advice if you bleed between periods, after sex or after the menopause, or if heavy periods are accompanied by pelvic pressure, significant pain, dizziness, breathlessness or extreme fatigue. Sudden very heavy bleeding, fainting or symptoms of severe anaemia require urgent medical attention.

Ongoing blood loss can lead to tiredness and iron-deficiency anaemia.

How heavy menstrual bleeding is investigated

Your consultation will usually begin with a detailed discussion about your cycle, the length and pattern of bleeding, associated pain, contraception, pregnancy plans, medication and wider medical history. A blood test may be recommended to check for anaemia and, where appropriate, thyroid or clotting problems. Keeping a short menstrual diary before your appointment can help show how often bleeding occurs and how much it affects daily activities.

Private gynaecology consultation discussing heavy period symptoms

A detailed consultation helps identify the most appropriate investigations.

A pelvic examination may be advised, depending on your symptoms and preferences. Ultrasound is commonly used to assess the womb lining, ovaries and the muscular wall of the uterus, and can help identify fibroids, adenomyosis, ovarian cysts or polyps. In selected cases, hysteroscopy or an endometrial biopsy may be recommended to examine the inside of the womb more closely and exclude changes in the lining.

Pelvic ultrasound can identify common structural causes of heavy bleeding.

Heavy Periods Treatment

Treatment is tailored to the cause of bleeding, the severity of symptoms, your general health and whether you may wish to become pregnant. Non-hormonal medicines, including tranexamic acid and certain anti-inflammatory medicines, may reduce bleeding during a period. Hormonal options can include the combined contraceptive pill, cyclical progesterone, other progestogen-based treatments or a levonorgestrel-releasing intrauterine system. Iron treatment may also be needed when tests confirm iron deficiency or anaemia.

Treatment choices are personalised around symptoms, health and fertility plans.

Procedures and surgical options

When medication is unsuitable, ineffective or not preferred, a procedure may be considered. Options depend on the diagnosis and can include hysteroscopic removal of a polyp or submucosal fibroid, endometrial ablation for selected patients who have completed their family, myomectomy to remove fibroids while preserving the uterus, or hysterectomy as a definitive treatment. The benefits, limitations, recovery and effect on future fertility should be discussed carefully before any decision is made.

Minimally invasive procedures may be appropriate when medical treatment is not enough.

Choosing the right pathway for you

The most effective pathway begins with understanding why the bleeding is happening. Two people with similarly heavy periods may need very different treatment depending on their age, scan findings, blood results, pain symptoms and fertility priorities. A specialist review provides the opportunity to compare suitable options, ask questions and make a decision based on both clinical evidence and your personal circumstances.

A calm, specialist assessment can help clarify the cause and next steps.

Speak to HerCare about heavy periods

You do not have to accept heavy bleeding as something you simply need to live with. Miss Annette Reid provides specialist assessment and personalised treatment for heavy periods, fibroids, adenomyosis and other gynaecological concerns at HerCare. Book a consultation to discuss your symptoms, investigations and the treatment pathways most appropriate for you.

HerCare offers specialist private gynaecology care in London and Guildford.

Contact HerCare to Arrange a Consultation