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What causes sudden nosebleeds?

Apr 17, 2024 Source: Cainiu Health
Dr. Lu Cheng
Introduction
In general, sudden nosebleeds may be caused by dry weather, nutritional deficiencies, acute rhinitis, sinusitis, deviated nasal septum, or other reasons. Patients should promptly visit a正规 hospital to determine the underlying cause and receive appropriate treatment. It is important to develop good daily habits, such as avoiding frequent nose picking, to prevent worsening of nosebleed symptoms.

Under normal circumstances, sudden nosebleeds may be caused by dry weather, nutritional deficiencies, acute rhinitis, sinusitis, deviated nasal septum, or other reasons. Patients should promptly visit a正规 hospital to determine the underlying cause and receive appropriate treatment accordingly. Specific analysis is as follows:

1. Dry Weather

Dry climate can cause the mucous membranes inside the nasal cavity to become dry and fragile, making blood vessels more prone to rupture and leading to nosebleeds. It is recommended to wear a mask when going outdoors to reduce exposure to irritating air. In cases of dry indoor air, using a humidifier can help increase humidity levels.

2. Nutritional Deficiencies

Deficiencies in certain nutrients, especially vitamin C and vitamin K, may impair blood vessel health and elasticity, increasing the risk of blood vessel rupture within the nasal cavity and resulting in nosebleeds. In such cases, it's important to adjust one's diet promptly, aiming for dietary variety and balanced nutrient intake.

3. Acute Rhinitis

Acute rhinitis is an inflammation of the nasal mucosa caused by viral or bacterial infections. This inflammation can lead to blood vessel dilation, congestion, and weakened mucosal tissue, making nosebleeds more likely when irritated. Under medical guidance, patients may use medications such as sodium chloride solution (saline), budesonide nasal spray, or赛洛唑啉 hydrochloride nasal spray to relieve symptoms.

4. Sinusitis

Sinusitis refers to infection or inflammation of the sinuses, which may increase pressure within the nasal cavity and cause mucosal congestion, thereby increasing the likelihood of nosebleeds. This is particularly evident during acute episodes of sinusitis. Under medical supervision, patients may take medications such as amoxicillin capsules, cefaclor capsules, or azithromycin dispersible tablets for treatment.

5. Deviated Nasal Septum

A deviated nasal septum refers to a bending or deformation of the nasal septum—the partition inside the nasal cavity—which can obstruct or unevenly distribute airflow. When exposed to external irritants such as strong air currents or dust, localized congestion and erosion may occur, potentially leading to epistaxis (nosebleeds). If necessary, surgical correction via septoplasty performed by a qualified physician may be required.

It is important to develop good daily habits, avoiding frequent nose picking, which could worsen nosebleed symptoms.


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