Postmenopausal bleeding always needs medical evaluation before it can be treated, because the right treatment depends entirely on what’s causing it. The most common cause, accounting for about 60% of cases, is thinning and drying of vaginal or uterine tissue. But roughly 10% of cases turn out to be endometrial cancer, and up to a third involve some form of gynecological malignancy. That’s why there’s no safe way to stop the bleeding at home without first knowing what’s behind it.
Why the Cause Matters
Postmenopausal bleeding has a wide range of causes, and each one requires a different approach. Tissue thinning (atrophy) is the most frequent at 60%. Endometrial polyps, which are small growths on the uterine lining, account for about 30% of cases. Other causes include uterine fibroids, infections, endometrial hyperplasia (an overgrowth of the uterine lining), and cancers of the cervix, uterus, or ovaries.
Certain medications can also trigger bleeding. Hormone replacement therapy, tamoxifen (a breast cancer drug), blood thinners, and even steroid injections used for joint pain have all been linked to unexpected postmenopausal bleeding. If you recently started or changed any medication, that’s important information for your doctor.
What Happens at the Doctor’s Office
The first step is typically a transvaginal ultrasound, which measures the thickness of your uterine lining. Current guidelines use a threshold of about 4 to 5 mm. If your lining is thinner than that and appears uniform, atrophy is the likely cause and a biopsy may not be necessary. If the lining is thicker, uneven, or shows unusual blood flow, further testing is needed.
An endometrial biopsy can be done in the office using a thin, flexible tube inserted through the cervix to collect a tissue sample. This takes a few minutes and can feel like strong cramping. The most commonly used device, called a Pipelle, has about 77% sensitivity for detecting endometrial cancer. For greater accuracy, hysteroscopy, where a small camera is inserted into the uterus, reaches about 86% sensitivity and allows your doctor to see and sometimes remove growths in the same procedure. If a polyp or suspicious area is found during hysteroscopy, it can often be removed right then.
Treatment for Vaginal and Uterine Atrophy
If thinning tissue is the cause, the standard treatment is low-dose vaginal estrogen. This comes as a cream, tablet, or ring inserted into the vagina. It works by restoring moisture, thickening the vaginal walls, improving blood flow to the tissue, and rebalancing the vaginal environment. A typical regimen involves a small amount of estrogen cream applied twice a week for about 12 weeks.
Vaginal estrogen stays mostly local, meaning very little enters your bloodstream compared to oral hormone therapy. Current guidelines recommend the lowest effective dose for symptom relief. Most women notice improvement within a few weeks, and the bleeding stops as the tissue regains thickness and resilience.
Treatment for Endometrial Polyps
Polyps are removed through hysteroscopy, a procedure where a thin scope with a small cutting instrument is guided into the uterus through the cervix. The polyp is shaved off or pulled out, and the tissue is sent to a lab to confirm it’s benign. This is usually done as an outpatient procedure, and recovery takes a day or two. Once a polyp is fully removed, the bleeding it caused typically stops.
Treatment for Endometrial Hyperplasia
Hyperplasia means the uterine lining has grown too thick, often due to excess estrogen without enough progesterone to balance it. Treatment depends on whether the overgrown cells look normal or abnormal (atypical) under a microscope.
For hyperplasia without atypical cells, progesterone-based therapy is the first-line treatment. One highly effective option is a hormone-releasing intrauterine device, which delivers a small, steady dose of progesterone directly to the uterine lining. Studies show this approach has an 88% success rate at reversing hyperplasia after 12 months. Alternatively, oral progesterone can be taken cyclically, typically for two weeks of each month over three months, with a follow-up biopsy to check whether the lining has returned to normal.
For hyperplasia with atypical cells, the picture is more serious because these changes can progress to cancer. Hysterectomy (surgical removal of the uterus) is the standard recommendation for women who are done having children. For those who want to preserve their uterus, higher-dose progesterone therapy can be tried under close monitoring, but it requires repeated biopsies to confirm the abnormal cells are clearing.
When the Cause Is Cancer
About 11% of women with postmenopausal bleeding are diagnosed with endometrial cancer, and roughly 18% with cervical cancer. The reassuring part is that 90% of women with endometrial cancer had bleeding as their first symptom, which means it’s often caught early. Early-stage endometrial cancer is highly treatable, usually with surgery to remove the uterus and sometimes the ovaries. The specifics of treatment depend on the stage, grade, and type of cancer found.
Medications That May Need Adjusting
If your bleeding is linked to a medication, your doctor may adjust the dose or switch you to an alternative. Hormone replacement therapy is a common culprit, particularly regimens that use estrogen without adequate progesterone. Tamoxifen, used in breast cancer treatment, stimulates the uterine lining and can cause thickening, polyps, or bleeding. Blood thinners (anticoagulants) don’t cause uterine problems directly but can make any minor bleeding source much more noticeable. Even corticosteroid injections given for unrelated conditions like tendinitis have been reported to trigger unexpected vaginal bleeding in postmenopausal women.
In these cases, stopping the bleeding often means working with your prescribing doctor to find an alternative that doesn’t affect the uterine lining, or adding a progesterone component to counterbalance estrogen’s effects.
How Quickly You Should Be Seen
Any bleeding after menopause warrants a medical appointment, not because it’s always dangerous, but because the serious causes are only distinguishable from the harmless ones through testing. If you experience heavy bleeding that soaks through a pad in an hour, or bleeding accompanied by dizziness, lightheadedness, or significant pain, seek care the same day. For light spotting, booking an appointment within the next one to two weeks is reasonable. What you should not do is wait months to see if it goes away on its own, or try to treat it with over-the-counter products.