Tuberculosis (TB) Treatment Guide: What to Expect During Care

Overview

Tuberculosis (TB) is a contagious bacterial infection caused by Mycobacterium tuberculosis. While it most commonly affects the lungs (pulmonary TB), it can also impact other organs like the kidneys, spine, or brain. TB exists in two forms: latent TB, where the bacteria are inactive in your body and cause no symptoms (and you are not contagious), and active TB, where the bacteria are multiplying and cause symptoms, and can spread to others. With proper, consistent treatment, nearly all cases of drug-susceptible TB are curable.

Signs & Symptoms

Latent TB causes no symptoms and is not contagious. Symptoms of active TB usually develop slowly over weeks or months, and may include:

• Persistent cough lasting 3 weeks or longer
• Coughing up blood or mucus
• Chest pain, especially when breathing or coughing
• Unexplained weight loss
• Fatigue and weakness
• Fever and chills
• Night sweats (heavy sweating while sleeping)
• Loss of appetite

Causes & Risk Factors

TB spreads through airborne droplets when a person with active pulmonary TB coughs, speaks, sings, or sneezes. You cannot get TB from shaking hands, sharing food or drinks, or touching surfaces. You are at higher risk for developing TB if you:

• Have close, prolonged contact with someone who has active TB
• Have a weakened immune system (from HIV, diabetes, certain medications like steroids, or other conditions)
• Live or work in high-risk settings like prisons, homeless shelters, or nursing homes
• Are from or have traveled to a country with high TB rates (including parts of Asia, Africa, and Latin America)
• Have malnutrition or use tobacco or substances regularly

Diagnosis

Your healthcare provider will use a combination of tests to diagnose TB and determine if it is latent or active, and if the bacteria are resistant to common antibiotics. Common tests include a TB skin test (Mantoux test) or TB blood test (IGRA) to check for TB infection, a chest X-ray to look for signs of TB in the lungs, and sputum tests to detect TB bacteria and test for drug resistance.

Treatment & Management

Treatment depends on whether you have latent or active TB, and if the bacteria are resistant to standard antibiotics. Latent TB is usually treated with 1–2 antibiotics for 3–4 months to prevent it from becoming active. Active, drug-susceptible TB is treated with a combination of 4 antibiotics for 6–9 months. Many people receive directly observed therapy (DOT), where a healthcare worker watches you take each dose to ensure adherence and improve cure rates.

Living With It

Once your doctor confirms you are no longer contagious (usually after 2 to 3 weeks of consistent treatment), you can safely return to work, school, and public activities. Many people feel better within a few weeks of starting treatment, but it is critical to continue taking all medications for the full prescribed course to fully cure the infection and prevent spreading TB to others.