What causes nosebleeds?

Many possibilities: The most common source of a nose bleed is from the front/ bottom part of the nasal septum. This is a vascular area and some people have prominent blood vessels in this area. The blood vessels may break with a nose blow, dryness, or picking at this area. But there are other more serious causes such as hypertension, growth and even a malignancy. See an ENT doctor.

Variety of issues: Lack of humidity such as in winter time with heat turned on. This can dry mucosa and cause nose bleeds. Low platelets as in certain blood diseases can also cause nose bleeds. Any issue that raises blood pressure. As you can see there are a variety of causes.

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.

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.