Yes, ovarian cysts can cause back ache, but usually only when a cyst is large, bleeding, twisted or linked to endometriosis. Pelvic pain remains a far more common symptom, and most cysts cause none at all.
Yes, ovarian cysts can cause back ache, although it is rarely the only symptom and it is far from the most common cause of back pain in women. If you have been wondering whether ovarian cysts can cause back ache, the short answer is that a cyst which grows large, presses on nearby structures, twists or ruptures may produce a dull, dragging discomfort in the lower back, pelvis or upper thighs. Most ovarian cysts, however, are small, harmless and cause no symptoms at all. Consultant Gynaecologist and Gynaecological Oncology Surgeon Mr Saurabh Phadnis regularly sees women in London who have been troubled by persistent lower back discomfort and want to know whether their ovaries could be responsible.
Mr Saurabh Phadnis (MBBS, MRCOG) is a Consultant Gynaecologist, Robotic and Oncological Surgeon and Colposcopist based in London, with subspecialty training at the Barts Gynaecological Cancer Centre and more than a decade of experience managing ovarian cysts, complex pelvic masses and gynaecological cancers. This article explains who is affected, what ovarian cysts are, why they sometimes cause back ache, how they are diagnosed and when a specialist assessment may be sensible.
Ovarian cysts are fluid-filled sacs that develop on or within an ovary. They are extremely common, particularly during the reproductive years, and according to NHS guidance on ovarian cysts most cause no symptoms and resolve without treatment within a few menstrual cycles. When symptoms do occur, pelvic pain is far more typical than back pain.
As of 2026, the overall picture remains reassuring. It is estimated that up to 10 per cent of women will have surgery for an ovarian cyst at some point in their lives, and guidance from the Royal College of Obstetricians and Gynaecologists confirms that the great majority of cysts found in premenopausal women are benign. Most simple functional cysts settle within about 8 to 12 weeks, which is why a repeat scan is often arranged rather than immediate treatment.
So, can ovarian cysts cause back ache in practice? They can, but usually only in specific circumstances: when a cyst becomes large enough to press on surrounding structures, when it bleeds or ruptures, when it twists the ovary (ovarian torsion), or when a cyst is associated with a condition such as endometriosis that irritates the pelvic nerves and ligaments. In these situations, discomfort may be felt low in the back, sometimes radiating into the buttocks or thighs.
It is worth keeping perspective. Non-specific musculoskeletal back pain is very common and affects most adults at some point, as outlined in NHS information on back pain. The estimated lifetime prevalence of low back pain in adults is around 60 to 70 per cent, as summarised by NICE, so back ache alone, without any pelvic symptoms, is unlikely to be caused by an ovarian cyst.
Understanding the type of cyst helps explain why symptoms vary so much between women. Ovaries naturally form small cysts each month as part of ovulation, and these are entirely normal.
Functional cysts, including follicular and corpus luteum cysts, form as part of the menstrual cycle. They are the most common type, usually measure only a few centimetres and typically disappear on their own. Occasionally a corpus luteum cyst bleeds internally, producing sudden one-sided pain that can be felt in the lower abdomen and, less often, the lower back.
Some cysts persist and grow. These include:
The ovaries sit deep within the pelvis, close to the bowel, bladder, ureters, pelvic nerves and the sacral region of the spine. Pain arising from pelvic organs is often poorly localised, which is why discomfort from an ovarian cyst can be felt in an area that seems unrelated.
A cyst measuring several centimetres or more adds weight and volume to the pelvis. This can stretch the ligaments that support the ovary and uterus and press on the pelvic sidewall, producing a heavy, dragging ache that many women describe as sitting low in the back. This is one of the clearest ways in which ovarian cysts can cause back ache.
The nerves supplying the ovaries share spinal segments with those supplying the lower back and upper thighs. The brain can misinterpret the source of the signal, so pelvic pain is experienced as back ache. This phenomenon, known as referred pain, explains why some women feel discomfort in the back and hip rather than over the ovary itself.
A ruptured cyst releases fluid or blood into the pelvis, which irritates the peritoneum and can produce sharp pain that spreads to the back. Ovarian torsion, where the ovary twists on its blood supply, causes severe, sudden pain with nausea and vomiting and needs urgent hospital assessment. Both are situations where ovarian cysts can cause back ache alongside more dominant abdominal symptoms.
Back ache caused by an ovarian cyst is seldom isolated. Associated features that make a gynaecological cause more likely include:
Persistent bloating, early satiety, abdominal pain and urinary urgency occurring on most days for three weeks or more should always be assessed, as NICE guidance recognises these as symptoms that warrant investigation for ovarian cancer. Reading more about the symptoms of ovarian cancer can help you recognise patterns that deserve a professional opinion, without causing unnecessary alarm.
Most ovarian cysts are managed conservatively, but some situations need prompt medical attention. Seek urgent care if you experience:
These features do not necessarily indicate anything serious, but they should be evaluated the same day rather than monitored at home.
Establishing whether ovarian cysts can cause back ache in your particular case requires a structured assessment rather than guesswork. A typical pathway involves:
Where the back ache appears musculoskeletal and the ovaries look normal, referral for physiotherapy or spinal assessment may be more appropriate than gynaecological treatment.
Treatment is individualised and depends on your age, symptoms, the appearance of the cyst and whether you have been through the menopause.
Small, simple cysts in premenopausal women are often monitored with a repeat scan after several weeks, since many resolve spontaneously. Simple pain relief, heat and gentle activity may help in the meantime.
Surgery may be recommended if a cyst is large, persistent, causing significant symptoms or has features that need histological confirmation. Most procedures are performed by keyhole (laparoscopic) or robotic surgery, which usually allows a shorter recovery and less postoperative discomfort. Where a cyst is suspicious, care is best delivered by a subspecialist team; Mr Saurabh Phadnis provides ovarian cancer surgery and complex pelvic surgery in London for exactly these situations. Wherever possible, healthy ovarian tissue is preserved, particularly in women who may wish to conceive.
Because ovarian cysts can cause back ache only in certain circumstances, other explanations should be considered. Common alternatives include mechanical or postural back strain, disc problems, sacroiliac joint dysfunction, kidney stones or urinary infection, irritable bowel syndrome, fibroids, endometriosis and adenomyosis. A careful history often points to the most likely cause, and it is quite possible to have both an incidental ovarian cyst and unrelated back pain at the same time.
Understanding your own risk profile is also useful. Family history, genetics and reproductive factors all influence ovarian health, and practical information on ovarian cancer prevention can help you make informed decisions about screening conversations and symptom awareness.
Yes. Because most cysts affect one ovary, any referred discomfort tends to be felt on that same side of the lower back or pelvis. One-sided ache that comes and goes with your cycle is worth mentioning to a clinician, particularly if it is accompanied by bloating or pelvic pain.
There is no fixed threshold. Some women with cysts of five centimetres or more have no symptoms at all, while smaller endometriomas can be very painful. Position, cyst type and whether the cyst is bleeding or pressing on nerves matter more than size alone.
Usually not. The vast majority of ovarian cysts are benign. Around 7,500 women are diagnosed with ovarian cancer in the UK each year, a very small number compared with the many more who develop harmless cysts. However, persistent bloating, abdominal pain, feeling full quickly and urinary urgency lasting three weeks or more should be assessed promptly, as advised in NHS guidance on ovarian cancer.
Not reliably. A lumbar spine X-ray will not show ovarian cysts, and a spinal MRI may only partially include the pelvis. A dedicated pelvic ultrasound is the appropriate test when a gynaecological cause is suspected.
It can. If the back ache had a separate musculoskeletal cause, removing the cyst will not resolve it. Recovery after keyhole surgery also involves some temporary discomfort. Your surgeon will discuss expected recovery and review any persistent symptoms at follow-up.
Your GP is a sensible starting point and can arrange initial scans and blood tests. A specialist consultation may be recommended if symptoms persist, if a cyst is complex or large, or if you would prefer a subspecialist opinion in London.
Ovarian cysts can cause back ache, most often when they are large, bleeding, twisted or linked to endometriosis, but back pain on its own is far more likely to have a musculoskeletal cause. What matters is the overall pattern: back ache combined with bloating, pelvic pain, urinary changes or a change in your periods deserves proper evaluation, and the great majority of cysts turn out to be benign and manageable.
If you are troubled by persistent lower back discomfort alongside pelvic symptoms and want a clear answer, a consultation with Mr Saurabh Phadnis, Consultant Gynaecologist and Gynaecological Oncology Surgeon in London, can provide a thorough assessment, appropriate imaging and an individualised plan. Contact the clinic to arrange a private or NHS appointment and discuss your symptoms in confidence.
