Symptoms of pulmonary capillary blockage generally include coughing up phlegm, chest pain, numbness of the lower limbs and so on. 1. Coughing up sputum: the blockage of pulmonary capillaries may cause increased movement of bronchial cilia, which will increase the secretion of mucus, resulting in coughing up sputum. 2. Chest pain: patients with pulmonary capillary blockage, if the blockage is serious, it will affect the heart, and when it affects the coronary artery branches of the heart, it will be blocked, leading to myocardial necrosis, and thus chest pain. 3. Lower extremity numbness: pulmonary capillary blockage is mainly caused by lower extremity venous thrombosis, when the lower extremity venous thrombosis is serious, it may lead to lower extremity blood circulation, causing lower extremity numbness, in addition to lower extremity venous thrombosis can cause pulmonary artery embolism, the need for timely treatment. The symptoms of pulmonary capillary blockage also include decreased skin temperature, cough, etc. It should be noted that pulmonary capillary blockage is not pulmonary embolism, and it is recommended to go to the regular hospital for treatment as prescribed by the doctor.