Tuberculosis is a chronic infectious disease caused by Mycobacterium tuberculosis. It can affect various organs throughout the body, but pulmonary tuberculosis is the most common. Initially, symptoms typically include some signs of tuberculosis toxicity, such as prolonged low-grade fever accompanied by coughing. Sometimes the coughing is not severe and may be mild, but in some cases, severe coughing can lead to hemoptysis and other conditions. Night sweats are also common, generally presenting with afternoon low-grade fever and night sweating, along with general fatigue, loss of appetite, difficulty eating, and weight loss.