If a patient gets a more severe infection initially, or if primary disease becomes active again, post primary TB will develop. In the lungs a pneumonia develops which will cause permanent damage if not treated promptly. The main symptoms are a cough, usually with sputum which is yellow or green. Coughing up blood is quite common. If damage to the lung is severe, patients will become breathless.
Patients usually have a high fever and sweats at night.
Weight loss, poor appetite, weakness and tiredness are common. However some patients may have no symptoms at all. Any part of the body can be affected by TB if it gets from the lungs into the blood stream and there may be no obvious disease in the lungs. Symptoms like fever and weight loss are often seen. Other symptoms will depend on which part of the body is being affected.