Any bleeding after twelve months without a period is considered abnormal, even if it's light or happens only once. Here's why prompt evaluation matters.
Yes, it should always be evaluated. Any vaginal bleeding after menopause, even spotting, is considered abnormal and should be seen by a clinician promptly. Most causes turn out to be benign, but because it can be an early sign of endometrial cancer, it should never be dismissed or waited out.
Seek urgent or emergency care if bleeding is heavy, such as soaking through protection within an hour, or if it comes with severe pain, dizziness, or fainting. For lighter bleeding or spotting, contact your clinician promptly to schedule an evaluation.
Menopause is defined as twelve months without a period. Once you've reached that point, any bleeding or spotting afterward, however light, brief, or infrequent, is called postmenopausal bleeding, and it's treated differently than irregular bleeding during your reproductive years. During perimenopause, irregular bleeding is often expected. After menopause, it isn't, and that distinction is why it always warrants a look.
Most of the time, the cause turns out to be benign. Thinning of the vaginal or uterine tissue from lower estrogen levels, known as atrophy, is the most common cause, along with polyps or spotting related to hormone therapy. Reassuringly, most postmenopausal bleeding is not cancer.
Evaluation still matters every time, because postmenopausal bleeding can, in some cases, be an early sign of endometrial cancer, and catching it early generally means more treatment options and better outcomes. That's why medical guidance is consistent on this point: postmenopausal bleeding should always be evaluated, not watched or waited out. An evaluation typically includes a history and exam, often a pelvic ultrasound, and sometimes an endometrial biopsy to look at the tissue directly.
Source: American College of Obstetricians and Gynecologists (ACOG)
These are the most common causes, from most to least frequent. Evaluation determines which applies to you.
Postmenopausal bleeding is never treated as routine or dismissed, whatever the eventual cause turns out to be.
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