Why does the nose always bleed with H1N1 flu, and what should be done?

Generally speaking, "Jia Liu" refers to influenza A. Influenza A is an acute respiratory infectious disease caused by the influenza A virus. Persistent nosebleeds after infection with influenza A may be caused by external force stimulation, nasal mucosa dryness, acute rhinitis, sinusitis, nasal polyps, and other reasons. Treatment can be administered under a doctor's guidance through general care, medication, and other methods. If discomfort occurs, it is recommended to seek medical attention promptly. The detailed analysis is as follows:

1. External Force Stimulation

During an influenza A infection, patients often experience nasal congestion and runny nose. Repeated nose-blowing or wiping may cause nasal mucosa dryness and rupture, leading to bleeding. Preventative measures include maintaining appropriate indoor humidity, using humidifiers, avoiding excessive nose-blowing, and rinsing the nose with warm water or saline solution to keep it moist.

2. Nasal Mucosa Dryness

After infection with the influenza A virus, patients often experience fever, which accelerates water loss from the body. If fluids are not replenished promptly, the nasal mucosa may become dry and prone to bleeding. Patients are advised to drink plenty of water, maintain suitable indoor humidity (e.g., using a humidifier), and avoid prolonged exposure to dry environments.

3. Acute Rhinitis

Acute rhinitis is mainly caused by viral infections. The influenza A virus directly invades nasal mucosal epithelial cells, triggering an inflammatory response that causes mucosal congestion, swelling, and increased vascular permeability, leading to nosebleeds. Symptoms may include nasal congestion and runny nose. Patients may use medications such as Xanthium Nasal Inflammation Capsules, Tongqiao Nasal Inflammation Tablets, and Nasal Passage Relief Granules according to medical advice.

4. Sinusitis

Sinusitis may develop due to excessive fatigue, nasal sinus foreign bodies, malnutrition, or infections in adjacent organs. During influenza infection, nasal mucosal inflammation may spread to the sinuses, causing sinusitis and resulting in nosebleeds. Symptoms may include purulent nasal discharge and headache. Patients can use medications such as Nasal Comfort Tablets, Tongqiao Nasal Inflammation Tablets, and Rhinitis Relief Granules under medical guidance.

5. Nasal Polyps

Nasal polyps may be associated with pathogenic microbial infections, genetic factors, immune mechanisms, and anatomical abnormalities. Long-term inflammation can stimulate nasal mucosa, leading to polypoid hyperplasia. The surface of the polyps contains many fragile blood vessels, which can cause the aforementioned symptoms. Symptoms may include persistent nasal congestion and reduced sense of smell. Treatment may involve nasal polypectomy under medical guidance, using low-temperature plasma technology to precisely remove the affected tissue while preserving normal structures to achieve therapeutic goals.

Routinely using saline solution to rinse the nasal cavity regularly can help maintain nasal moisture and reduce the risk of nasal mucosal dryness and bleeding.