What are the symptoms of pulmonary thrombosis?

Pulmonary embolism is caused by a large or extensive thrombus that blocks the pulmonary artery or its branches. Pulmonary embolism is medically called pulmonary thromboembolism. The symptoms of pulmonary embolism are: first, difficulty breathing and shortness of breath, especially after activity; second, chest pain; Third, hemoptysis, often a small amount of hemoptysis, large hemoptysis is relatively rare; fourth, cough, palpitations, etc.; fifth, syncope, can be the only or first symptom of pulmonary embolism; sixth, irritability, panic and even dying feeling.