Blood in the mouth can be caused by bleeding in the mouth, throat, lungs or upper gastrointestinal tract.
1. Mouth: Oral diseases such as gingivitis, mouth ulcers, bleeding from teeth, and trauma to the mouth can cause blood to come out of the mouth.
2. Throat: Trauma to the throat, bleeding disorders, ruptured tumors, etc. can also lead to blood in the mouth.
3. Lungs: Tuberculosis, bronchial dilatation, pneumonia, lung cancer and other lung diseases can be manifested as coughing up bright red blood or coughing up pink foamy sputum, which is caused by rupture of capillaries in the lungs. This is the result of ruptured capillaries in the lungs causing blood to be spit out. It is often accompanied by chest tightness, cough and other symptoms.
4. Upper gastrointestinal tract: gastroduodenal ulcer, cardia tear, gastric cancer, as well as due to liver disease leading to portal hypertension, esophagogastric fundus varices rupture, can be caused by vomiting bright red blood, this time the blood is mostly from the upper gastrointestinal organs.
If you have spit out fresh blood for many times, you should consult a doctor as soon as possible to make a clear diagnosis and then carry out targeted treatment.