Tuberculosis (TB) is a bacterial infection that most often affects the lungs. It remains a major health problem in India, but it is both preventable and curable. Early recognition and a complete course of treatment are what protect the patient and the people around them.

Symptoms that should not be ignored

  • Cough lasting more than two to three weeks
  • Fever, especially in the evenings, and night sweats
  • Unexplained weight loss, loss of appetite and weakness
  • Chest pain with breathing or coughing
  • Coughing blood or blood-streaked sputum

These symptoms can also occur in other conditions, which is why testing matters. Do not self-diagnose and do not start anti-TB medicines on your own.

How TB is evaluated

The doctor takes a detailed history and examines you, then may advise tests such as a chest X-ray, sputum tests for the bacteria, and other investigations depending on where infection is suspected. Which tests are appropriate is a clinical decision. TB diagnosis and treatment follow national programme guidance and the doctor's judgement for each patient.

Treatment: the course must be completed

TB treatment uses a combination of medicines over several months. Symptoms often improve within weeks, but the bacteria are not fully cleared until the course is complete. Stopping early, skipping doses or taking medicines irregularly can allow the infection to return in a harder-to-treat form. Side effects such as nausea, yellowing of the eyes or skin, rash, or vision problems should be reported to the doctor promptly rather than stopping medicines yourself.

Protecting family and others

People close to a patient with infectious TB may need screening. Covering the mouth when coughing, keeping rooms well ventilated, and following the doctor's advice on when it is safe to resume close contact help reduce spread. Good nutrition and treating other conditions such as diabetes support recovery.

Patient source: WHO — Tuberculosis ↗

Frequently asked questions

Is tuberculosis curable?

Yes. TB is curable with a complete, correctly followed course of prescribed treatment. Stopping early can let the infection return and can lead to drug resistance.

Can TB be present outside the lungs?

Yes. Although TB most often affects the lungs, it can also involve lymph nodes, bones, the spine, the brain coverings and other sites, and needs medical assessment.

This article is general education and does not replace an examination, diagnosis or treatment plan.