Frequent nosebleeds in spring can be caused by environmental factors, allergic rhinitis, vasomotor rhinitis, and so on.
1. Environmental factors: the temperature difference between day and night is large in spring, the nasal mucosa and submucosal blood vessels in the hot and cold air alternately stimulate, can occur suddenly contraction and expansion, some of the capillary elasticity in the nasal cavity is poor or brittle, easy to rupture the blood vessels and the appearance of nosebleeds.
2. Allergic rhinitis: the relative increase of pollen allergens in spring, easy to make allergic rhinitis patients have acute allergic reactions, nasal submucosal tissue inflammatory infiltration, mucosal cell edema, there can be a localized hyperreactive state, in the role of stimulating factors can occur local oozing blood.
3. Vasomotor rhinitis: mostly caused by autonomic dysfunction, may induce nasal mucosal inflammatory reaction, nasal mucosal capillary congestion and rupture of the situation, especially in the spring and seasonal alternation of the period, triggering factors under the influence of the original cause of rhinorrhea or aggravation of the disease.
In this case, it is necessary to go to the otolaryngology department to make a diagnosis through examination, so as to carry out targeted treatment.