Rhinorrhea is one of the common clinical symptoms, which can be caused by nasal diseases or by systemic diseases. Specific causes are as follows: 1. Local causes: 1. Primary: clinically, many patients cannot find a clear cause for nasal bleeding, mostly seen in children or adolescents, and the bleeding site is mostly in the nasal septum Li area, which is easy to stop by itself; 2. Benign and malignant tumors in the nasal cavity, sinuses or nasopharynx can cause rhinorrhea; 6.
Second, systemic causes 1, hypertension and arteriosclerosis; 2, elevated venous pressure; 3, systemic bleeding disorders: such as coagulation mechanism disorders, platelet abnormalities or capillary lesions; 4, endocrine disorders.