Symptom · Ovarian cysts
Most cysts are nothing. Some deserve a proper look.
Ovarian cysts are extremely common through the reproductive years and into perimenopause — most are simple functional cysts that resolve on their own. The two things worth knowing well: which cysts warrant follow-up, and the different rules that apply after menopause (any new ovarian cyst deserves careful assessment). This page is the plain-English map: what's normal, what's not, and what to ask for.
Educational summary
Editorial summary written against NAMS 2022, IMS 2024, NICE NG23 and the Endocrine Society, plus the peer-reviewed studies cited at the bottom of this guide.
Not medical advice. For diagnosis or treatment, see a doctor or specialist.
'Ovarian cyst' is a catch-all for any fluid-filled sac on or in the ovary. Most are functional — the ovary makes them every cycle as part of ovulation, and they disappear again within weeks. Others are structural (dermoid cysts, endometriomas from endometriosis, cystadenomas). In perimenopause, erratic ovulation means functional cysts turn up more often and sometimes get bigger before they resolve, which is why so many midlife women get sent for a scan and then reassured. The rules change after menopause: the ovaries aren't ovulating any more, so a new ovarian cyst is not a functional cyst and warrants proper characterization. The point of this page is to help you tell the difference and know what to ask for — not to scare you into surgery you don't need, and not to leave you dismissing a red flag.
What's happening
What's actually going on
Cysts are common, and 'cyst on the ovary' is not one thing. Knowing which kind matters more than the word itself.
Functional cysts — the normal ones
EvidenceFollicular cysts (the follicle grows but doesn't release the egg) and corpus luteum cysts (the follicle releases but doesn't collapse) are part of normal ovulation. They are usually simple (thin-walled, clear fluid), typically under 5cm, and resolve within 1–3 cycles without treatment. Perimenopause makes these more common because ovulation is more erratic.
Endometriomas — 'chocolate cysts'
MedicalCysts on the ovary from endometriosis. They have a characteristic ground-glass appearance on ultrasound and can cause deep pelvic pain, painful sex, and painful periods. They are benign but they can grow, distort pelvic anatomy, and affect fertility. Management is a specialist endo conversation — surgery isn't automatically the answer.
Dermoids, cystadenomas, and other benign structural cysts
MedicalDermoid cysts (teratomas) are made of a mix of tissues; cystadenomas are fluid-filled and can get large. Both are almost always benign but often need removal because they can twist (ovarian torsion — a genuine emergency), rupture, or keep growing. They are not caused by anything you did.
'Polycystic-appearing ovaries' is not the same as an ovarian cyst
EvidenceIn PCOS/PMOS the ovaries have many small immature follicles giving a 'polycystic' appearance on scan. Those are not cysts in the sense of a mass that needs monitoring — they're a hormonal picture. If a scan report says 'polycystic-appearing ovaries' and you don't have PCOS symptoms, ask what specifically was seen; if you do, cross to the PCOS guide.
After menopause the rules change
MedicalThe postmenopausal ovary should not be actively making follicles. Any new ovarian cyst after 12 months of no periods is not a functional cyst and needs proper characterization: transvaginal ultrasound (ideally with a risk-of-malignancy score like IOTA/O-RADS), CA-125, and gynaecology review. Most post-menopausal ovarian cysts are still benign — but 'wait and see' isn't the right first move.
Ovarian torsion — the one true emergency
MedicalA cyst (usually 5cm+) can cause the ovary to twist on its blood supply. The presentation is sudden severe one-sided pelvic pain, often with nausea and vomiting. This is an emergency — the ovary can be lost if it isn't untwisted within hours. Sudden severe unilateral pelvic pain with a known cyst warrants an emergency-room trip, not a wait-and-see.
What to try
What actually happens with a cyst
Most cysts need watching, not treating. A few need a plan. The point is a proper look, not automatic surgery.
Simple functional cyst — repeat scan in 6–12 weeks
MedicalStandard care: an initial ultrasound; if it looks simple and under 5cm, a follow-up scan after a couple of cycles to confirm it has resolved. Most do. No treatment needed in between beyond over-the-counter pain relief if it aches.
Larger or complex cyst — CA-125 and a risk score
MedicalFor cysts that are bigger, complex on ultrasound, or persistent, a CA-125 blood test and a formal risk-of-malignancy calculation (IOTA/O-RADS, or in the UK the RMI score) helps triage whether it's likely benign or needs a gynae-oncology opinion. CA-125 alone is a rough tool — it goes up with endometriosis, fibroids, and menstruation — so it's read in context, not in isolation.
Endometrioma — treated as endometriosis, not just 'a cyst'
MedicalIf the scan looks like an endometrioma, the conversation shifts to endometriosis management: hormonal suppression, pain control, and specialist surgery only where there's a clear reason (pain, growth, fertility). Ovarian tissue is precious; surgery on endometriomas can reduce ovarian reserve, so it's a specialist decision.
Post-menopausal cyst — characterize before deciding
MedicalTransvaginal ultrasound with a risk score, CA-125, and gynaecology referral. Most small simple cysts (under ~5cm, purely fluid, thin-walled) in postmenopausal women are followed rather than removed. Complex, solid, or larger cysts warrant a proper surgical opinion — but that opinion should include the option of removing only the affected ovary rather than both.
Painful cyst — what actually helps day to day
PersonalHeat, NSAIDs (ibuprofen/naproxen if you tolerate them), and knowing what movements make it worse. If pain is severe, persistent, or one-sided and getting rapidly worse — do not push through, get seen. Torsion is time-critical.
What doesn't work
EvidenceThere are no supplements, diets, herbs or 'cyst-shrinking' protocols that reliably dissolve ovarian cysts. Marketing that says otherwise is marketing. The right thing is the boring thing: imaging, a plan, a follow-up scan.
A note from us: these are things women in this community have found helpful, not medical advice or a protocol. Doses, products, and routines vary person to person, run anything new past your doctor or pharmacist first, especially if you're on medication or in surgical or medically-induced menopause.
What to track
What to note before the appointment
Cyst appointments are quick. A short set of specifics makes the conversation faster and better.
Where and when the pain is
PersonalLeft, right, or both sides; constant, cyclical, or after activity/sex; how many days per cycle; whether it's 1–10 severe or a background ache. Note anything that reliably makes it worse (sex, exercise, bowel movements, particular movements).
Log thisCycle context
EvidenceLast period, cycle length recently, any late or missed cycles, any bleeding between periods, any post-menopausal bleeding (even spotting). This changes the differential completely.
Bloating, urinary and bowel symptoms
MedicalNew persistent bloating, feeling full quickly, needing to pee more often, constipation. Individually these are usually nothing; persistent and combined they are on the ovarian-cancer symptom list and worth naming rather than dismissing.
Family history
MedicalOvarian, breast, endometrial, colorectal cancer in first-degree relatives; known BRCA1/2 or Lynch syndrome in the family. This changes both the workup and any decision about surgery.
Previous scans and prior cysts
PersonalIf you've had scans before, bring the dates and reports if you can. 'Same cyst, same size' vs 'new cyst, bigger' is a different conversation.
Log this
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Browse what helpsSister conditions
The other four that live on the same axis.
Endo, adeno, fibroids, cysts and PCOS/PMOS overlap constantly in midlife — heavy bleeding, anemia, pelvic pain, hormone conversations, hysterectomy decisions. If one landed you here, the others are worth a look.
Sister condition
Endometriosis
Tissue like the uterus lining growing outside it. Pain out of proportion, deep-dyspareunia, bowel and bladder flares around the bleed.
Sister condition
Adenomyosis
The lining pushed into the muscle wall. Heavy, dragging, clot-heavy bleeds and a uterus that feels bruised. Often missed until 40+.
Sister condition
Uterine fibroids
Benign muscle-wall growths. Very common, often symptomless, sometimes the reason for the heavy bleed, pressure, and iron-deficiency anemia.
Sister condition
PCOS / PMOS in midlife
The newer name (Polycystic Metabolic Ovarian Syndrome) foregrounds the metabolic axis that gets louder in perimenopause. Insulin, cardiovascular, HRT choices.
Take it further
What you can do next.
Track ovarian cysts, what to know over time
Two weeks of honest notes is the fastest way to spot what's changing. Free to start, charts are Premium.
Talk to others
Threads from members going through the same thing. The main community is free; quieter members-only rooms are Premium.
Find a menopause-trained doctor
For the medical conversations on this page. Searchable by region.
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Where to go from here.
This page isn’t the end of it. Here are the rooms in the rest of the site that pick it up — each one a small handful of real picks, not a generic “explore the library.”
Go a layer deeper
When the basics aren't moving the needle
A longer guide from the treatments shelf, for when the at-home picks aren't enough on their own. Free to start, more if you want it.
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What's landed recently
Studies from the research library, graded and summarised. Free to read.
Or — wrong door?
Could this actually be endo & adeno, the full guide?
If the pattern fits endo & adeno, the full guide more than ovarian cysts, what to know, that guide is probably the better starting point.
What do I do next?
Pick one. Today, not someday.
Track it for two weeks
Start a daily log for ovarian cyst / pelvic pain. Two weeks of dots makes a pattern visible, and gives you something concrete to bring to a doctor or specialist.
Open symptom logRead the related guide
This sits inside a bigger picture. the periods & cycle chaos pathway walks through the wider pattern and the trade-offs.
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Find a practitionerTalk to your doctor
Use the printable conversation script: what to say, what to ask for, and how to ask for a second opinion if the first appointment didn't land.
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Related
These show up together.
When to seek help
When this needs more than watchful waiting
Most cysts need reassurance, not action. These specific signals do warrant urgent or expedited assessment.
Sudden severe one-sided pelvic pain — go to the ER
MedicalOvarian torsion can lose an ovary in hours. Sudden severe pain in one side of the pelvis, often with nausea/vomiting, especially with a known cyst, is an emergency — same day, not next week.
Any ovarian cyst after menopause
MedicalNew ovarian cyst after 12+ months without a period always warrants proper assessment: transvaginal ultrasound with a risk score, CA-125, and a gynaecology opinion. Most are benign, but the workup is the point.
Persistent bloating, early satiety, urinary frequency for weeks
MedicalThe classic ovarian-cancer symptom cluster is subtle: new persistent bloating, feeling full very quickly, needing to pee often, and pelvic/abdominal pain — for weeks, not days. Any woman over 40 with this cluster deserves a CA-125 and pelvic ultrasound, not an IBS label. This is one of the most missed diagnoses in women's health.
A cyst that keeps growing, or a complex/solid finding on scan
MedicalGrowing, complex (mixed solid and cystic), or solid ovarian findings warrant gynaecology referral with a risk score. Not automatically surgery — but not just repeat scanning either.
Bleeding after menopause of any kind
MedicalPost-menopausal bleeding always needs urgent investigation (transvaginal ultrasound, biopsy where indicated) within weeks. Most causes are benign; endometrial cancer must be ruled out.
Family history of ovarian/breast cancer or BRCA/Lynch
MedicalA cyst on the ovary of someone with a known BRCA1/2, Lynch syndrome, or strong family history of ovarian, breast, endometrial or colorectal cancer is a different conversation — genetic-service-aware gynaecology, not routine follow-up. Say it in the appointment.
Further reading
The clinical guidelines and research this educational summary draws on.
Nila is an education and peer-support app, not a medical provider and not a diagnostic tool. The summary above is written by our editorial team and draws on current society guidelines and peer-reviewed literature, listed below so you can read the originals for yourself and discuss them with a qualified clinician. See how we review content.
Guideline basis (whole site)
The 2022 Hormone Therapy Position Statement
North American Menopause Society (NAMS) · 2022 · Clinical guideline
Read the sourceIMS White Paper on Menopausal Hormone Therapy
International Menopause Society (IMS) · 2024 · Clinical guideline
Read the sourceMenopause: identification and management (NG23, 2024 update)
NICE (UK National Institute for Health and Care Excellence) · 2024 · Clinical guideline
Read the sourceTreatment of Symptoms of the Menopause: Clinical Practice Guideline
Endocrine Society · 2015 · Clinical guideline
Read the source
Additional symptom-specific references for this guide are being added. In the meantime, the guideline basis above covers the hormonal and treatment claims made on this page.
See the wider research libraryThis guide is educational content only. It is not medical advice, diagnosis, or treatment, and it is not a substitute for a consultation with a qualified healthcare provider. If you are experiencing a medical emergency, call your local emergency number. Do not start, stop, or change any medication, hormone therapy, or supplement based on what you read here without first talking to your clinician.