Which among the following is not a common symptom of tuberculosis?

Correct option is C

Sol. Weight gain is not a common symptom of tuberculosis. TB typically causes weight loss due to the chronic infection and metabolic burden it places on the body. Other classic symptoms of TB include a persistent cough (often with sputum), low-grade fever especially at night, fatigue, and loss of appetite. The disease mainly affects the lungs but can spread to other organs.
Explanation of each option:
· (a) Cough for three weeks or more – A hallmark sign of pulmonary TB. The cough may be dry or productive and may sometimes include blood.
· (b) Fever, especially at night – Low-grade fevers with night sweats are classic TB symptoms, especially in active infection.
· (c) Weight gain – Correct Answer. TB usually causes unintentional weight loss due to loss of appetite and systemic inflammation.
· (d) Loss of appetite – Common in TB, especially in prolonged or untreated cases. It contributes to overall nutritional decline.