Sudden Nosebleeds: Causes, Symptoms & When to See a Doctor

There are many possible causes of a sudden nosebleed, including:

Trauma: A blow to the nose can damage the blood vessels inside, causing a nosebleed.

Allergies: Nasal allergies can cause inflammation and swelling of the nasal passages, making them more likely to bleed.

Deviated septum: A deviated septum is a condition in which the nasal septum (the cartilage and bone that divides the nose into two nostrils) is off-center. This can cause one nostril to be narrower than the other, which can increase the risk of nosebleeds.

Nasal polyps: Nasal polyps are small, non-cancerous growths that can form in the nasal passages. They can block the airway and cause congestion, which can lead to nosebleeds.

Sinusitis: Sinusitis is an infection or inflammation of the sinuses. It can cause congestion, sneezing, and nosebleeds.

Dry air: Dry air can irritate the nasal passages and make them more likely to bleed.

Certain medications: Some medications, such as aspirin, ibuprofen, and blood thinners, can increase the risk of nosebleeds.

Underlying medical conditions: Some underlying medical conditions, such as high blood pressure, bleeding disorders, and liver disease, can increase the risk of nosebleeds.

If you experience a sudden nosebleed, it is important to try to stop the bleeding by pinching your nostrils together for 10-15 minutes. If the bleeding does not stop, you should seek medical attention.