People can have latent TB, which causes no symptoms and is not contagious. If it reactivates, it can cause permanent damage to the lungs and/or other areas such

People can have latent TB, which causes no symptoms and is not contagious. If it reactivates, it can cause permanent damage to the lungs and/or other areas such as the bones, joints, kidneys, and brain. Diagnosis and treatment are important just the same. Lazy doctors can miss out on testing for TB when the lungs appear clear, with symptoms present in just the lymph nodes, bones, joints, kidneys, or brain, indicating possible extrapulmonary TB.