What are the early symptoms of lung cancer that can confirm the diagnosis? The incidence of lung cancer is quite high, which has seriously endangered the physical and mental health of lung cancer patients. What are the common early symptoms of lung cancer: 1. Cough. It is the most common early symptom of lung cancer. As lung cancer grows on bronchopulmonary tissue, it usually produces irritating cough due to respiratory tract irritation. Low fever. After the tumor blocks the bronchus, there is often an obstructive lobe of lung exists, and the degree varies. In mild cases, there is only low fever as the early symptom of lung cancer, while in severe cases, there is high fever, which can temporarily improve after medication, but will recur soon. Secondly, chest pain is lighter, mainly manifested as boring pain, hidden pain, the location is not inevitable, and the relationship with breathing is uncertain. If the distension pain occurs continuously, it indicates that the cancer has the possibility of involving the pleura. There will be a small amount of bleeding when the tumor inflammation causes necrosis and capillary breakage, which is often mixed with sputum and appears intermittently or intermittently, and is also a common early symptom of lung cancer. According to which early symptoms of lung cancer can be diagnosed, these are mainly introduced above, and I believe you have already understood them. The symptoms of lung cancer are complex and diverse, so I hope that when you recognize the early symptoms of lung cancer, you can achieve early detection and early treatment in order to prevent lung cancer and live a healthy life. Once the early symptoms of lung cancer appear, you must go to hospital for treatment in time so as not to miss the best treatment time.