There are blood streaks in the nostrils but no bleeding.

In general, blood streaks in the nostrils without active bleeding may be caused by dry environments, improper diet, nose picking, rhinitis, hypertension, or other factors. These issues can be improved through general management, medication, and other treatments.

1. Dry environment: Prolonged exposure to dry air can cause nasal mucosa to become dry, making it more susceptible to damage and resulting in blood-tinged mucus. It is important to avoid extended periods in dry environments and maintain appropriate indoor humidity, such as by using a humidifier.

2. Improper diet: Consuming large amounts of spicy foods, such as chili peppers and Sichuan pepper, may irritate the nasal mucosa, causing capillaries to dilate and rupture, leading to minor bleeding. Spicy food intake should be reduced, and a balanced diet rich in fresh fruits and vegetables should be maintained.

3. Nose picking: Excessive force when picking the nose may create low pressure inside the nasal cavity, causing capillaries to rupture due to blood pressure, resulting in slight bleeding. Avoid picking the nose; if nasal cleaning is needed, gently wipe with a soft tissue or cotton swab.

4. Rhinitis: This is an inflammation of the nasal mucosa caused by bacteria, viruses, allergens, or other irritants. Inflammation leads to congestion and fragility of the mucosa, making it prone to blood streaks, often accompanied by symptoms such as nasal congestion and itching. Medications such as Tongqiao Biyan Granules or Amoxicillin Capsules may be used under medical guidance to reduce inflammation.

5. Hypertension: This refers to persistently elevated blood pressure against the blood vessel walls. Chronically high blood pressure may impair clotting function, increasing the risk of nasal bleeding, often accompanied by dizziness and headaches. It is recommended to take antihypertensive medications such as Nifedipine Tablets or Methyldopa Tablets as directed by a physician.

When these symptoms occur, prompt medical consultation is advised, along with necessary examinations and treatments as recommended by a doctor. Maintaining healthy daily habits and avoiding harmful irritants can help prevent blood streaks in the nose.