What causes nose bleeding?

I believe many people have experienced nose bleeding. Generally, when the nose is bleeding, people usually find toilet paper to plug the nostrils, and then tilt their heads back to stop the nosebleed from continuing to flow down. If nose bleeding occurs occasionally, this method can stop it, but if nose bleeding occurs frequently, you need to pay attention. What causes nose bleeding?

There are actually many reasons for frequent nose bleeding. It may be a systemic factor of the patient, or it may be due to ruptured blood vessels in the nose. Therefore, if you want to know what causes nose bleeding, you must first understand what causes your nose bleeding.

The causes of nosebleeds are very complex and can be roughly divided into two categories: local and systemic causes.

Local causes of epistaxis

1. Primary: Clinically, many patients cannot find a clear cause for nose bleeding, which is more common in children or adolescents. The bleeding site is mostly in the nasal septum area and is easy to stop on its own.

2. Nasal inflammation: such as acute rhinitis, sinusitis, atrophic rhinitis, etc.

3. Nasal septum deviation and perforation.

4. Traumatic: Damage to the nasal mucosa when picking the nose is a common cause of nosebleeds.

5. Tumor: Benign or malignant tumors in the nasal cavity, sinuses or nasopharynx can cause nosebleeds.

6. Environmental factors: Dry air and low air pressure can easily cause nose bleeding. Dry air in air-conditioned rooms can also cause nose bleeding.

Systemic causes of nosebleeds

1. Systemic hemorrhagic diseases: such as coagulation disorder, platelet abnormalities or capillary lesions.

2. Increased venous pressure.

3. Hypertension and arteriosclerosis.

4. Endocrine disorders.

Now that we know what causes nose bleeding, we need to remind you that 90% of nose bleeding cases are caused by local reasons. Therefore, it is recommended that you first check for local causes. If local causes are ruled out, then systemic factors may be the cause.