Chinese medicine recognizes that it is caused by a deficiency of the kidneys and yin fire carrying blood upwards, or by the fire of the heart meridian and blood heat delusion. The main mechanisms of hemoptysis are as follows: 1. Increased vascular permeability Due to infection, poisoning or vascular embolism in the lung, pathogens and other TSE products can produce direct damage to the microvasculature or increase the permeability of the microvascular wall through the action of vasoactive substances, and red blood cells enter the alveoli from the dilated microvascular endothelial cell gap and create small amounts of hemoptysis. 2.Vascular wall erosion and rupture Chronic infection of the lung causes damage to the elastic fibers of the vessel wall, resulting in the formation of small arterial hemangiomas. 3, pulmonary intravascular pressure increase rheumatic heart jaundice with valve stenosis, pulmonary hypertension, high blood grave heart disease and other cases of pulmonary intravascular pressure increase, can cause blood extravasation or small blood vessel rupture and cause hemoptysis. 4, hemostasis, coagulation dysfunction Common in thrombocytopenic purpura and other blood disorders, received in the coagulation factor defects or coagulation process disorders and poor vascular contraction and other factors, on the basis of systemic bleeding tendency may also appear hemoptysis. 5, mechanical injury trauma or tuberculosis calcification foci, bronchial calculi mechanical injury to blood vessels caused hemoptysis. Experts further point out that respiratory diseases, bronchitis, and gastrointestinal diseases can easily cause hemoptysis. For those who cough and vomit blood, consider bronchial disease; for those who suffer from chronic stomach disease, consider gastrointestinal disease. It is worth noting that when hepatitis B develops to the stage of cirrhosis, there are often serious and fatal bleeding, such as vomiting blood, blood in urine, blood in stool, bleeding from ruptured esophageal veins, and other symptoms of hepatitis B. Do not be careless when you have blood vomiting, but go to the hospital as soon as possible to find out the cause and prescribe the right medicine. 1, portal hypertension, resulting in damage to the esophagus of the fundus of the stomach, coupled with excessive gastric acid, it is easy to cause vomiting blood. 2, peptic ulcer bleeding, accounting for 15% to 30%; clinical manifestations are mainly black stools and/or bloody stools, rarely hemorrhagic shock. 3, is a liver disease, liver function abnormalities, resulting in a reduction of coagulation factors in the body, this cause is also can lead to the emergence of blood vomiting situation. What is coughing up blood This disease is coughing up blood is the symptom that blood comes from the lungs or trachea and blood comes out with coughing. It is mostly caused by trauma, or external evil offending the lungs, liver fire offending the lungs, yin deficiency and fire, or qi not taking in blood, which causes damage to the lung channels and blood overflowing out of the veins. A variety of lung diseases, such as consumption, lung cancer, lung loxoplasmosis, as well as blood overflow disease, epidemic spot fever, rice fever, heart failure, etc., can cause coughing up blood. Recommended reading: What is the cause of coughing up blood or disease caused by? 1, the first should exclude bleeding from the nose, throat, mouth and vomiting blood (from the upper gastrointestinal tract, often with food residues, blood is acidic, mostly accompanied by black stool), and definitely belong to coughing blood (blood with coughing out, blood often with bubbles, sputum, blood is alkaline). 2. Generally, chest x-ray examination, fiberscopy, bronchial iodine oil imaging, electrocardiogram and other examinations should be performed, and the right medicine should be prescribed after the examination. 3, according to the condition for diagnostic thinking, such as: (1) repeated cough for many years, or large mouth coughing blood, mostly belong to pulmonary complex Zhang, consumption. (2) Those who cough up blood with pus sputum are mostly suffering from pulmonary fever, pulmonary carbuncle and pulmonary loxoplasm. (3) Persistent small amount of coughing blood or blood in sputum, especially in men over 40 years old who have been smoking for a long time, should be alerted to lung cancer. (4) For those with a history and signs of heart disease, coughing up blood may be related to heart disease.