Why does blowing your nose cause nose bleeding?

Eliza Parker
Eliza Parker on behalf of MDLIVE
The inside of the nose is lined with tiny little blood vessels. When a person has a cold or allergies causing a runny nose the inside of the nose gets red and irritated (inflamed). This swelling inside the nose and irritation causes the thin lining of the nose that covers these tiny blood vessels to thin even more making the tiny blood vessels closer to the surface. Blowing the nose very hard can cause further irritation inside the nose by dislodging mucus and possibly exposing these tiny vessels resulting in bleeding. If a person is getting frequent nosebleeds they may have tiny little clots that have formed that have stopped the bleeding previously. If they then blow their nose very hard they could dislodge one of these tiny clots and the nose will start to bleed again.

Continue Learning about Nose Disorders

Nose Disorders

Nose Disorders

Your nose plays a very important part in maintaining your health. As you breathe it filters out the bad stuff in the air like dust and germs. It also moistens the air as you breathe so that your lungs stay hydrated and healthy. Yo...

u can be miserable if your nose is injured or irritated, whatever the cause. Nose disorders can range from a simple nosebleed or a runny nose that can be treated at home to more serious disorders such as nasal polyps (growths) or a deviated septum (a twist in the wall that separates the two sides of your nose) that may require surgery. Whatever the cause of your nose problem, it's important to know that you can usually be helped by seeing an ear, nose and throat (ENT) doctor.

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.