What are the early symptoms of lung cancer? There are four types

In current medicine, lung cancer is an obvious respiratory tumor. Once it occurs, there will be many symptoms. At the earliest, there will be obvious coughing and even low-grade fever. In addition to these, there will also be chest pain, and even obvious symptoms of coughing up blood when coughing, which must be taken seriously.

Lung cancer is a relatively common respiratory tumor in medicine, so it may be ignored at the earliest stage, and when it is discovered, it has already entered the middle and late stages. Even if it is treated immediately at this time, it will also affect the effect of the treatment. Moreover, after receiving treatment, the overall effect is not optimistic, so it is very important to understand the early symptoms. So what are the early symptoms of lung cancer?
1. Obvious cough <br/>Lung cancer tumors will appear directly on the bronchi, so it is normal to have a cough. This is mainly because the cancer tumors will produce a series of irritations to the respiratory tract. If it is not improved, it will naturally cause an irritating cough.
2. Obvious low-grade fever <br/>The presence of a tumor itself can cause obstruction of the lung lobe. In this case, the patient will also find himself with obvious fever symptoms, but in most cases it is low-grade fever. However, each person's symptoms are different. Some patients may also have severe high fever, which may not be well controlled even after taking medication and will continue to relapse.
3. Chest pain <br/>In the early stages of lung cancer, mild chest pain may actually occur, such as dull pain or stuffy pain in the chest. Most of the symptoms of this pain are not fixed, and are directly related to daily breathing. If you find that there is persistent bloating and pain, it may not be caused by lung cancer, but may be a pleural tumor. In short, pain should not be ignored.
4. Blood in sputum <br/>After the tumor appears, if it is not effectively controlled for a long period of time, it will naturally lead to obvious necrosis of tissue cells. If the capillaries are severely damaged, severe bleeding may also occur. This bleeding phenomenon is sometimes directly mixed with the sputum. Therefore, when you cough up sputum, you will find that there is obvious blood in the sputum, which also needs to be taken seriously.