When are nosebleeds a problem?
Ask the doctor
Q. I just moved to a high-altitude, dry region and I've since had a couple of nosebleeds. Could my location have anything to do with it?
A. Absolutely. Indeed, while six in 10 people will experience a nosebleed at some point in their lives, the most common cause is dry air — which is also typical in high-altitude areas. Most nosebleeds occur when delicate tissue inside your nose becomes cracked, prompting bleeding from tiny blood vessels. Other frequent triggers include allergies, blood-thinning medications, or a deviated septum (when the cartilage and bone wall separating the nostrils shifts off-center). While most nosebleeds end within minutes, you can help one stop faster by pinching the bridge of your nose, leaning forward, and applying ice.
Most nosebleeds aren't a cause for concern, but certain signs indicate otherwise. If they happen frequently, the blood flow is heavy or long-lasting (more than 20 minutes), or other symptoms show up — such as unexplained bruises, dizziness, or fast heart rate — it's important to see your doctor. These situations might mean you need evaluation for high blood pressure, iron deficiency anemia, or a blood clotting disorder.
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About the Author
Toni Golen, MD, Editor in Chief, Harvard Women's Health Watch; Editorial Advisory Board Member, Harvard Health Publishing; Contributor
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