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Common Causes of Nosebleeds

Most people have gotten a nosebleed a few (if not several) times throughout their lives. There are numerous possible causes for nosebleeds, and they rarely require medical attention. Nonetheless, knowing the most common causes of nosebleeds can help you avoid the discomfort and inconvenience they bring. 

Dry Air

Dry air is the most common cause of nosebleeds by a significant margin. When the membranes in the nose become dry, they’re more likely to become injured and bleed. 

Nose Picking

Nose picking is another very common nosebleed trigger. Picking the nose can injure the nasal membranes, leading to bleeding. 


Allergies, including hay fever, can dry out the inside of the nose, making bleeding more likely. You may experience nosebleeds with allergies when you cough or sneeze, as these actions impart extra pressure on the blood vessels in the nose. 

High Altitude

Many people experience nosebleeds when they visit high-altitude regions. This occurs because atmospheric pressure lowers when altitude increases, causing the pressure within the nasal blood vessels to be higher than the outside pressure. As a result, the vessels can rupture, causing nosebleeds. 

Blood Thinners

Blood-thinning medications like heparin and warfarin prevent blood coagulation, which increases the likelihood of nosebleeds. 

Recreational Drugs

Recreational drugs that are snorted through the nostrils, like cocaine, tend to damage the nasal tissues. Therefore, individuals who use these drugs are more likely to experience nosebleeds. 

Deviated Septum

When the thin wall located between the nasal passages is positioned off to one side, it’s known as a deviated septum. This condition can cause drier nasal passages and, as a result, nosebleeds. 

Most nosebleeds go away on their own and don’t indicate a more serious medical problem. However, if you experience a severe nosebleed that produces a high volume of blood, or if you experience multiple nosebleeds each month, it’s time to talk to a doctor.

At ENT Associates, we provide expert care for allergies and problems affecting the nose and sinus. Contact us today to schedule an appointment!

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ENT Associates Main Office

1330 South Fort Harrison
Clearwater, FL 33756

Phone: 727-441-3588
Fax: 727-461-1038

Hours of Business: 8:00AM - 5:00PM

Extended Hours:
Countryside until 6:30PM (Thu Only)
Port Richey until 6:30PM (Alt Wed Only)

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