Symptoms of tuberculosis are diverse. They include cough, sputum, low fever, and lack of energy, and in some cases, tuberculosis is asymptomatic and found by chance in a medical examination.
Since cough, the most common symptom of tuberculosis, is also observed in colds, asthma, and bronchitis, it is difficult to distinguish tuberculosis from these diseases based on symptoms alone. Therefore, if cough or sputum persists for more than 2 weeks without any particular cause, you may want to receive medical treatment.
People who have been close to a tuberculosis patient are recommended to regularly get contact examinations even if they do not have any symptoms.