Tuberculosis fever is the most common systemic symptom of tuberculosis. The main manifestation of tuberculosis is prolonged low-grade fever, with body temperature not exceeding 38.5°C, mostly in the afternoon and in the middle of the night, but when the disease progresses, high fever can occur, with body temperature greater than 38.5°C. The clinical manifestations of tuberculosis are diverse, with fever being the most common and other symptoms such as night sweats, loss of appetite, anemia, weight loss, and in some cases, cough, chest pain, and systemic failure. In addition, there can be swollen and painful joints, erythema nodosum and erythema annulare of the extremities, and other manifestations of tuberculosis rheumatism, and cough, sputum, hemoptysis and chest pain when the respiratory system is involved.