Prolonged untreated tuberculosis may cause serious harm to oneself, and at the same time create a greater risk of social transmission and other adverse effects. Tuberculosis long-term untreated, first of all, will cause more serious harm to themselves, such as long-term cough, hemoptysis, chest pain and other symptoms, can affect the normal respiratory function of the trachea and bronchial tubes, and in severe cases, can cause respiratory failure and life-threatening. In addition to their own physical strength, mental state significantly worse, affecting normal work and life. At the same time, there is also a greater risk of social transmission, through normal contact with people, as well as sputum and other secretions, can cause the spread of the disease, seriously endangering the lives and health of others. Therefore, when infected with TB, you need to seek medical treatment in a timely manner to protect yourself and take the corresponding social responsibility at the same time.