Tuberculosis is a bacterial infection that most often affects the lungs. Infectious pulmonary disease can spread through the air. TB infection without active disease differs from TB disease and may have no symptoms. TB is preventable and treatable, but assessment and the appropriate course of treatment require healthcare professionals. This short article does not diagnose a cough or provide a drug regimen. Persistent cough, unexplained weight loss, night sweats or fever warrants assessment. Coughing blood needs urgent attention, and severe breathing difficulty requires emergency care. Mention symptoms and known TB contact. Tests guide the next steps; cough alone cannot establish TB. If treatment is prescribed, ask about follow-up and support rather than sharing medicines or selecting a regimen independently.