Noticing brown vaginal discharge after menopause can be surprising. After 12 consecutive months without a menstrual period, you might not expect to have vaginal bleeding or discharge again.

When something new appears, it can raise immediate questions and concerns: Is this normal? What could be causing it? Should I call my doctor?

This article explains what types of vaginal discharge can be normal after menopause, what may signal an underlying issue, and when to get medical attention.

What Causes Brown Vaginal Discharge?

Brown vaginal discharge after menopause can have several possible causes, including:

• Genitourinary syndrome of menopause (vaginal atrophy) — Thinning and drying of the vaginal lining, often due to hormonal changes
• Uterine or cervical polyps — Usually benign (noncancerous) growths on the cervix or uterine lining
• Fibroids — Noncancerous growths in the uterus
• Endometrial hyperplasia — Thickening of the uterine lining
• Bacterial vaginosis — A common condition caused by an imbalance of bacteria in the vagina
• Sexually transmitted infections (STIs) — Including chlamydia, gonorrhea, and trichomoniasis
• Medication side effects — Vaginal bleeding linked to certain blood thinners and some other medications
• Injury or trauma — Irritation or damage to vaginal tissue, including during sexual activity, especially if you have vaginal dryness
• In some cases, starting hormone replacement therapy, changing the dose, or stopping treatment can cause light bleeding or spotting.

Is Bleeding After Menopause Always Cancer?

The short answer is no — many causes of postmenopausal bleeding aren’t serious. However, for about 10 percent of women with postmenopausal bleeding, it is an early sign of uterine cancer, so it’s important to rule out cancer.

The most common type of uterine cancer is endometrial cancer, which starts in the inner lining of the uterus and is more common after menopause. Postmenopausal bleeding can also be a symptom of other gynecologic cancers, including cervical cancer and ovarian cancer.

Although cancer is one of the less common causes of bleeding after menopause, it’s important to tell your doctor about any postmenopausal bleeding or blood-tinged discharge.

Other Symptoms of Endometrial Cancer

Bleeding after menopause is often the symptom that leads someone to see a doctor for evaluation. Other possible symptoms of endometrial cancer include abnormal discharge, pelvic pain, and unintentional weight loss.

Women who haven’t yet reached menopause may notice abnormal vaginal bleeding. Some may also be diagnosed while seeking medical care for infertility.

Who’s at Risk of Postmenopausal Bleeding?

About 10 percent of women over 55 have postmenopausal bleeding. Although anyone can experience bleeding after menopause, certain factors may increase the risk, including:

• Taking hormone therapy
• Taking tamoxifen, a medication used to treat and help prevent breast cancer
• Having a family history of breast, colon, or endometrial cancer
• Having a personal history of uterine polyps or fibroids
• Experiencing vaginal dryness or pain during sexual activity
• Living with obesity
• Having diabetes

When Should You See a Doctor?

Any vaginal bleeding or unusual vaginal discharge should be checked by a healthcare provider, especially if it is brown, pink, or bloody or has changed from what is typical for you.

Even mild bleeding, bleeding that happens only once, or bleeding without pelvic pain can be easy to dismiss. However, any postmenopausal bleeding is considered abnormal and should be evaluated. Schedule an appointment with your doctor if you notice any of the following:

• Light vaginal bleeding or spotting
• Heavy bleeding
• Brown discharge
• Pink discharge
• Any other unusual discharge
• Blood clots
• Bleeding after sex

You can start with your primary care provider. However, for postmenopausal bleeding, you may also see a gynecologist or another women’s health specialist. They can check for changes in the uterus, cervix, ovaries, and vaginal tissues, as well as identify possible causes and recommend next steps.

What Happens Next?

If you see your healthcare provider about brown vaginal discharge after menopause, they’ll usually start by asking about your symptoms and medical history. They may ask when you went through menopause, because bleeding that happens later in the postmenopausal years may require more testing. They’ll also want to know:

• When you first noticed the discharge
• How often it occurs
• Whether you have symptoms such as abdominal or pelvic pain, fever, or chills
• Whether you’re taking any medications

Next, your provider will usually perform a pelvic exam. Depending on what they find, they may recommend additional tests to help identify the cause of the brown discharge or bleeding. These tests may include:

• Pap test — A test that checks for abnormal cells on the cervix
• Transvaginal ultrasound — An imaging test used to examine the uterus and measure the thickness of the uterine lining
• Endometrial biopsy — A small sample of tissue taken from the uterine lining and checked for abnormal or cancerous cells
• Hysteroscopy — A procedure in which a thin, lighted camera is inserted through the cervix into the uterus to look for polyps, fibroids, or other unusual growths

Many of these tests are done in an outpatient setting, so most people can go home the same day.

How Is Brown Vaginal Discharge Treated?

Treatment options for brown vaginal discharge after menopause depend on the underlying cause. In some cases, no treatment may be needed.

Infections such as bacterial vaginosis and some STIs are usually treated with antibiotics. Other STIs may require different medications.

If vaginal dryness is causing your symptoms, treatment may include vaginal moisturizers, lubricants, or low-dose vaginal estrogen.

If polyps, fibroids, or other growths are found, your healthcare provider may recommend treatment, especially if they’re causing symptoms. Depending on the cause, treatment may include medications or procedures such as polypectomy (removal of a polyp) or, in some cases, hysterectomy (surgery to remove the uterus and cervix).

The best treatment option for you depends on the cause of your bleeding or discharge, your symptoms, your overall health, and your preferences. Your healthcare team can help you weigh the benefits and risks of your options.

If your provider thinks cancer may be the cause, or if cancer is diagnosed, you may be referred to a gynecologic oncologist for more testing and treatment.

Brown vaginal discharge after menopause is often linked to conditions that can be treated. Still, brown discharge or bleeding after menopause isn’t considered normal and should be evaluated.

The most important step is to schedule an appointment with your doctor. A checkup can help find the cause, rule out serious conditions, and ensure you get the care you need.