Consumption is also commonly known as tuberculosis, the most exposed is tuberculosis, how is tuberculosis caused? Tuberculosis is mainly caused by the infection of the body with the tuberculosis bacillus, and basically half of the people in China have a history of tuberculosis infection, but the onset of tuberculosis is mainly caused by the lowering of the body’s immunity after infection with the tuberculosis bacillus, and the onset of the disease is caused when the body’s resistance is poor due to overexertion or major events. Many patients with tuberculosis have no obvious symptoms when they get tuberculosis and are unaware of the existence of the disease, and some patients are found during physical examinations. After a physical examination, a shadow is found in the lung and further examination determines that the disease is tuberculosis. Some patients with severe disease or coughing for more than 2 weeks, or even some patients with coughing for 1 month, 3 months or 6 months, go for a chest CT to confirm the diagnosis of tuberculosis. Tuberculosis is a generic term for TB, and the most common form of TB is pulmonary TB. Therefore, TB is the most common form of consumption, but as long as the body has a strong resistance and lives a regular life, the presence of TB infection will not cause the disease.