Lung cancer is a common malignant tumor of respiratory system, but itching is still rare. Lung cancer is the disease with the highest mortality in respiratory system at present. Although it is believed that the main pathogenic factor of lung cancer may be caused by smoking, the specific reasons are still unclear.

Tobacco contains a lot of nicotine and tar, as well as many nitrosamines and lotus-scented spasmolytic compounds, all of which are strong carcinogens. There are also occupational factors and patients with tuberculosis and bronchiectasis in the past, which can also lead to lung cancer. Lung cancer is mainly spread by lymphatic metastasis, blood metastasis and direct dissemination.

What are the main clinical symptoms of lung cancer? Where will there be itchy symptoms, let's popularize it for everyone!

1 The most common symptoms of lung cancer are cough and expectoration (blood in sputum). Cough, usually dry cough, occurs because of tumor growth and stimulation of bronchial mucosa. Taking antitussive drugs is ineffective, and cough is mainly metallic. Coughing up phlegm and hemoptysis mainly causes the blood vessels on the tumor surface to rupture and bleed through coughing, and necrosis and inflammatory reaction will occur at the bleeding site, so there will be symptoms of expectoration and blood in sputum.

Chest pain, chest tightness and shortness of breath are mainly due to the tumor entering the mucosa of the chest wall, and intermittent chest pain occurs through friction. In the late stage of lung cancer, the tumor will spread and invade lymphatic vessels, resulting in pleural effusion and pericardial effusion. Fourth, the human body will have symptoms of chest tightness and shortness of breath.

3 hoarseness, emaciation and fever, tumor growing into the plexus, excessive lymph swelling leading to hoarseness symptoms of recurrent laryngeal nerve compression, lung inflammation and infection will have different degrees of fever, but emaciation is generally affected by the patient's later mental state, and pain and tumor consumption lead to emaciation.

Generally, the metastasis of cancer cells in the late stage of lung cancer will lead to hematopoiesis, bone and joint, digestion and skin lesions, and skin itching will occur. Therefore, there is no scientific basis for skin itching caused by lung cancer, so although there will be different degrees of skin itching in the late stage of lung cancer, there is no specific part.