Renowned nutrition dietitian and child care expert Dr. Archita Mahajan has cautioned that a cough lasting more than two to three weeks should not be ignored, as it may indicate tuberculosis (TB) rather than a common viral infection.
Dr. Mahajan, who holds a Master’s degree in Food Nutrition and Dietetics, is a Homeopathic Pharmacist, trained Yoga Teacher, Padma Bhushan nominee, and has been honored by the Punjab Government, Himachal Pradesh Government, and Ladakh Lieutenant Governor Kavinder Gupta.
She explained that a normal cough caused by seasonal viral infections usually improves within a few days to one week with proper rest, hydration and medication. However, when cough persists for several weeks and does not respond to routine medicines, it becomes a matter of medical concern.
Difference Between Common Cold Cough and TB Cough
Duration:
A common cold cough generally resolves within 7–10 days, whereas TB-related cough continues for more than 2–3 weeks and may last for months if untreated.
Phlegm (Sputum):
Normal cough may produce clear or slightly white mucus. TB cough often produces thick yellow-green sputum and, in severe cases, blood-stained mucus (hemoptysis).
Associated Symptoms:
Cold-related cough includes sore throat, runny nose and mild fever. TB symptoms include chest pain, persistent fever (especially in the evening), night sweats, loss of appetite and rapid weight loss.
Cause:
Common cough is usually caused by viral infections, while TB results from infection by the bacterium Mycobacterium tuberculosis.
Key Warning Signs of TB Cough
- Cough lasting more than 2–3 weeks
- Persistent productive cough
- Blood in sputum in severe cases
- Shortness of breath or chest pain
- Night sweats and recurring fever
Dr. Mahajan emphasized that TB requires specialized antibiotic treatment under the DOTS (Directly Observed Treatment Short-course) program and cannot be cured with regular cough medicines.
She advised individuals experiencing prolonged cough symptoms to seek medical testing immediately to ensure early diagnosis and treatment, which significantly improves recovery outcomes.
