Mild tuberculosis is usually not serious and does not have serious complications. It can usually heal itself with active treatment or due to its own body immunity, while some tuberculosis is serious and can even have life-threatening complications. For example, patients with tuberculosis may cough up blood, and patients with tuberculosis may have life-threatening respiratory failure and pulmonary encephalopathy due to a decline in lung function, so regardless of the severity of tuberculosis, active treatment is required upon diagnosis. Treatment with anti-tuberculosis drugs is generally required, along with symptomatic treatment, such as additional drugs if the patient is infected with other pathogenic microorganisms. If the patient has a significant decrease in lung function and shortness of breath, antiasthmatic drugs may be used. Surgery may be considered if the patient has an indication for surgery, such as severe lung destruction or severe pleural hypertrophy.