What is Tuberculosis?
Tuberculosis is a serious infectious disease caused by the bacterium Mycobacterium tuberculosis. It most commonly affects the lungs (pulmonary TB), but it can also spread to other parts of the body, including the brain, kidneys, spine, and lymph nodes (extrapulmonary TB).
TB spreads through the air when a person with active TB disease coughs, sneezes, speaks, or sings. While TB is preventable and treatable, it remains a major public health concern worldwide—especially when diagnosis or treatment is delayed.
Is Tuberculosis Preventable?
Yes, tuberculosis is preventable, especially with early detection and proper medical care.
Key Prevention Strategies
- Early screening for people at higher risk
- Prompt treatment of latent TB infection
- Good ventilation in indoor spaces
- Wearing masks in healthcare or high-risk environments
- BCG vaccine (used in many countries; limited use in the U.S.)
People with latent TB infection are not contagious but may develop active TB if untreated. Preventive therapy significantly reduces this risk.
What Are the Symptoms of Tuberculosis?
TB symptoms can develop gradually and may vary depending on the organs affected.
Common Pulmonary TB Symptoms
- Persistent cough lasting 3 weeks or longer
- Coughing up blood or mucus
- Chest pain or discomfort
- Shortness of breath
General TB Symptoms
- Fever and chills
- Night sweats
- Fatigue or weakness
- Unintentional weight loss
- Loss of appetite
⚠️ Seek medical attention promptly if symptoms persist or worsen.
What Causes Tuberculosis?
Tuberculosis is caused by infection with Mycobacterium tuberculosis bacteria.
Risk Factors Include
- Close contact with someone who has active TB
- Weakened immune system (HIV, diabetes, cancer treatment)
- Smoking or chronic lung disease
- Living or working in crowded environments
- Travel or residence in regions with high TB rates
How Is Tuberculosis Diagnosed?
Accurate diagnosis is essential for effective treatment and preventing transmission.
Diagnostic Methods
- TB Skin Test (Mantoux test)
- TB Blood Tests (IGRA)
- Chest X-ray or CT scan
- Sputum tests (microscopy, culture, molecular testing)
A pulmonologist may use multiple tests to confirm whether TB is latent or active.
What Are the Treatment Options for Tuberculosis?
TB is curable with proper medical treatment, but it requires strict adherence to therapy.
Standard TB Treatment
- Combination of antibiotics taken for 6–9 months
- Common medications include isoniazid, rifampin, ethambutol, and pyrazinamide
Important Treatment Notes
- Never stop treatment early—even if symptoms improve
- Drug-resistant TB requires specialized care
- Regular follow-ups ensure effectiveness and safety
Early treatment protects both the patient and the community.
When to See a Pulmonologist
If you have persistent respiratory symptoms, abnormal chest imaging, or possible TB exposure, evaluation by a board-certified pulmonologist is critical for accurate diagnosis and care.
If you are experiencing symptoms of tuberculosis or need expert evaluation, Dr. Rina Awan, MD, a highly trained, board-certified pulmonologist, provides comprehensive TB diagnosis, treatment, and follow-up care in Houston.
Schedule an Appointment with a Top Pulmonologist in Houston
Frequently Asked Questions (FAQs)
Yes, active pulmonary TB is contagious. Latent TB is not contagious.
TB can recur if treatment is incomplete or if drug resistance develops.
People with symptoms, known exposure, weakened immunity, or high-risk occupations.
TB is less common in the U.S. but still occurs, especially in urban areas and high-risk populations.
Yes. Children can develop TB and require specialized diagnosis and treatment.
Visit these Trusted Reference Sources
Centers for Disease Control and Prevention (CDC) – Tuberculosis (TB)
https://www.cdc.gov/tb
World Health Organization (WHO) – Tuberculosis Fact Sheets
https://www.who.int/health-topics/tuberculosis
National Institute of Allergy and Infectious Diseases (NIAID) – TB Overview
https://www.niaid.nih.gov/diseases-conditions/tuberculosis
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