5 doctors weighed in:

What causes nosebleeds?

5 doctors weighed in
Dr. David Astrachan
ENT - Head & Neck Surgery
4 doctors agree

In brief: Superficial vessels

95% of nosebleeds occur from the front of the nose.
Blood vessels can be superficial in that area and easily traumatized. This then can lead to bleeding. Bleeding is usually worse when noses are irritated either from an upper respiratory tract infection or allergies. Some people have bleeding disorders which can also make bleeding worse. If nosebleeds are a problem for you you should see an ENT doctor for an evaluation.

In brief: Superficial vessels

95% of nosebleeds occur from the front of the nose.
Blood vessels can be superficial in that area and easily traumatized. This then can lead to bleeding. Bleeding is usually worse when noses are irritated either from an upper respiratory tract infection or allergies. Some people have bleeding disorders which can also make bleeding worse. If nosebleeds are a problem for you you should see an ENT doctor for an evaluation.
Thank
Dr. Heidi Fowler
Psychiatry

In brief: Causes

Nose bleed reasons: nasal congestion or nasal dryness, ^ blood pressure, excessive use of decongestants, being at ^ altitude, trauma to nose, nose picking, or blowing the nose hard.
Bacterial ; viral infections can ^ risk as well as bleeding disorders. Recurrent nose bleeds may be due to broken vessel in the nose. Alcohol / Cocaine abuse can cause nose bleeds, as can tumors.

In brief: Causes

Nose bleed reasons: nasal congestion or nasal dryness, ^ blood pressure, excessive use of decongestants, being at ^ altitude, trauma to nose, nose picking, or blowing the nose hard.
Bacterial ; viral infections can ^ risk as well as bleeding disorders. Recurrent nose bleeds may be due to broken vessel in the nose. Alcohol / Cocaine abuse can cause nose bleeds, as can tumors.
Thank