Distinguish blood from lungs and throat

Distinguish the blood in the lungs and throat, because the trachea is very sensitive, if tracheitis, bronchitis caused by lung bleeding, blood is generally choked out, this is clinically called hemoptysis; The blood in the throat generally does not cause cough, but it will cause foreign body sensation in the throat. The blood that can be coughed out by clearing the throat is generally judged to be the blood of the throat; There is also a kind of gastrointestinal bleeding, such as gastric bleeding. However, it is difficult to distinguish throat hemorrhage from pulmonary hemorrhage in clinic. If necessary, otolaryngology examination is needed to evaluate whether there is bleeding point. Bronchoscopy is needed to evaluate whether there is complicated airway hemorrhage when the condition permits. Imaging should be actively improved for corresponding evaluation and treatment.