Rhinorrhea is one of the more common clinical symptoms, which can be caused by nasal diseases (such as nasal injury, nasal septal deviation, nasal inflammation, nasal tumor, nasal foreign body, etc.) or by systemic diseases (such as bleeding diseases and blood diseases, acute febrile infectious diseases, cardiovascular system diseases, pregnancy, menopause, etc.).
There are abundant blood vessels in the nasal cavity, and various factors such as inflammatory stimulation, forceful nose blowing and nose digging can cause rupture of capillaries in the nasal mucosa, resulting in nasal bleeding, but usually a small amount of bleeding. When nasal tumors invade the large blood vessels in the nasal cavity, trauma causes the rupture of large blood vessels, hypertension, arteriosclerosis and other systemic diseases cause the rupture of nasal arteries due to the increase of nasal blood vessel pressure, and certain bleeding diseases (such as various leukemias, anemia, coagulation dysfunction, etc.) can lead to impaired nasal blood vessel function and nasal bleeding. In adolescent women, nasal bleeding can occur during the time of menarche, when menstruation is irregular and compensatory menstruation occurs; in addition, nasal bleeding can be caused by female endocrine disorders during menopause and the last 3 months of pregnancy.
Rhinorrhea can occur at any age and in any part of the nasal cavity, either on one side or both sides; occasional or small amount of bleeding does not require special treatment; larger amount of bleeding or bleeding does not stop requires prompt consultation and treatment under the guidance of a specialist; rhinorrhea in children and the elderly requires attention.