When coughing up blood, you should distinguish the cause of the bleeding. Some causes of bleeding are not serious, while others are more serious.
1. If the cause of bleeding is a nosebleed, the blood flows into the mouth and is coughed out, then it is not very serious.
2. Bleeding caused by acute bronchitis violent coughing led to small blood vessel rupture bleeding, such cases are not very serious, but should be to the hospital for treatment.
3. Bleeding due to acute heart failure caused by coughing pink foamy sputum; lung cancer, tuberculosis, bronchiectasis combined with infection caused by coughing, coughing sputum (blood in the sputum) usually indicates that the situation is more serious, you should go to the hospital in a timely manner to avoid delays in the treatment of the condition.
In summary, except for cough bleeding due to nosebleeds, all should be promptly to the hospital for treatment.