What are the causes of nosebleeds in summer?

Hot weather is a common external cause of nosebleeds in summer. If the climate is dry and the temperature is high, the nasal cavity will be dry, causing local capillary damage in the nasal cavity to rupture and cause bleeding.

Hereditary hemorrhagic telangiectasia, with a family history of hereditary bleeding proneness, nasal mucosal vein dilation, rupture and bleeding, and recurrent nosebleeds; other symptoms such as endocrine disorders and dysmenorrhea (from menstrual period) Nasal bleeding - instead of menstruation) are all causes of nosebleeds.

Arterial hypertension, such as persistent hypertension, granular kidney disease, chronic nephritis, arteriosclerosis, hypertensive epilepsy, excessive exertion, violent mood swings, and rapid changes in air pressure (high-altitude flying, mountain climbing) , diving, hyperbaric oxygen chamber), etc., can cause a temporary increase in arterial blood pressure and cause nosebleeds.

Venous hypertension, such as bronchitis, emphysema, pulmonary edema, bicuspid stenosis, pulmonary congestion, right heart dilation, tumors of the thorax, mediastinum and neck, and after strenuous exercise, etc. Causes venous blood pressure to rise and cause nosebleeds.

Hematological diseases, such as hemophilia, dysalbuminemia, various purple rays, aplastic anemia, leukemia, pernicious anemia, scurvy, thrombocytopenic purpura and platelet quality and quantity Abnormalities can also cause nosebleeds.

Liver and spleen diseases and rheumatic diseases, such as cirrhosis, hypersplenism, gout, rheumatic fever and other collagen diseases, can cause nosebleeds; nutritional and vitamin deficiencies, such as malnutrition, blood Vitamins and trace elements can also cause nosebleeds.