The clinical manifestations of pulmonary tuberculosis are varied and are related to the extent of the lesion, the nature of the lesion, the patient’s underlying function, and many other factors. Systemic symptoms of fever are the most common and last for a long time, up to several weeks, and are usually a low fever in the afternoon. Night sweats are another manifestation: they differ from sweating in that they occur during sleep and stop upon awakening. Other systemic symptoms include fatigue, weight loss, insomnia, palpitations, flushing of the cheeks, and menstrual disorders including amenorrhea. High fever may also occur in the acute hematogenous form. Respiratory symptoms Cough and sputum are usually dry or white mucus sputum, with yellow purulent sputum or foul-smelling sputum when combined with other bacterial infections. Hemoptysis occurs in about 1/3 of patients at different times of the disease. Dyspnea is usually seen when the tuberculosis lesions are extensive, the pleura is thickened, and obstructive pulmonary air and pulmonary heart disease are combined. Chest pain occurs when the tuberculosis lesion involves the mural pleura. Signs, if the lesion is small or located deep in the lung tissue, there are no abnormal signs. Signs may be present when the lesion expands. Fine wet rales may be heard, and the lungs may sound turbid or solid on percussion. If the tuberculosis is combined with a large cavity, cavernous breath sounds can be detected, and percussion sounds can be hyperclear or even bulging.