Common symptoms of tuberculosis toxicity include fatigue, low-grade fever in the afternoon, loss of appetite, night sweats and emaciation, while women with tuberculosis may have irregular menstruation or even amenorrhea. Fever is the most common symptom, and most of them are low-grade, appearing in the afternoon and evening, and the temperature can return to normal the next morning. Some patients may have dyspnea, which is caused by extensive involvement of lung tissues, or a large amount of pleural effusion, pneumothorax, etc., affecting the function of lung ventilation and gas exchange, and subsequently leading to the lack of oxygen.