Why is coughing up blood bright red

Coughing up blood is an abnormal condition, which is caused by some diseases inside the body. For example, problems with the throat, lungs, or other parts of the body can cause us to cough up blood. Generally speaking, coughing up blood should be treated immediately, otherwise the condition will only become more and more serious, and may even lead to death. So what is coughing up blood?

Hemoptysis refers to the process in which bleeding occurs from the respiratory organs below the larynx (i.e., the trachea, bronchi, or lung tissue) and is discharged from the mouth through coughing. Hemoptysis can be caused not only by respiratory diseases, but also by circulatory system diseases, trauma, and other systemic diseases or systemic factors. It should be differentiated from bleeding in the mouth, pharynx, nose and hematemesis.

Respiratory diseases. Such as pulmonary tuberculosis, bronchiectasis, bronchitis, lung abscess, lung cancer, pneumonia, paragonimiasis, pulmonary amebiasis, pulmonary echinococcosis, pulmonary fungal disease, pneumocystis carinii, bronchial stones, lung metastatic tumors, pulmonary adenoma, silicosis, etc. These inflammations lead to increased permeability of bronchial mucosa or lesion capillaries, or rupture of submucosal blood vessel walls, causing bleeding.

Circulatory system diseases. Common ones include rheumatic heart disease, mitral stenosis, hypertensive heart disease, pulmonary hypertension, aortic aneurysm, pulmonary infarction and pulmonary arteriovenous fistula.

trauma. Chest trauma, contusion, rib fractures, gunshot wounds, explosion injuries and medical procedures (such as chest or lung puncture, biopsy, bronchoscopy, etc.) can occasionally cause hemoptysis.

Systemic bleeding tendency disease. Common ones include leukemia, hemophilia, aplastic anemia, pulmonary hemorrhagic leptospirosis, epidemic hemorrhagic fever, pulmonary plague, thrombocytopenic purpura, disseminated intravascular coagulation, chronic renal failure, uremia, etc.

Other less common diseases or abnormalities. Such as alternative menstruation (no vaginal bleeding), oxygen poisoning, Goodpasture's syndrome, bronchiectasis, sinusitis, and visceroposition syndrome.