Which of the following is NOT a sign of Tuberculosis?

Weight gain is not considered a sign of Tuberculosis (TB) because the disease is often associated with a range of symptoms that generally indicate its presence and impact on the body, which do not include weight gain. In fact, TB typically leads to weight loss due to a combination of factors such as decreased appetite, fatigue, and the body’s efforts to combat the infection, which can increase metabolic demands.

In contrast, a persistent cough lasting more than three weeks, chest pain, and night sweats are classic symptoms of TB. These symptoms indicate the body's response to the infection and can help in diagnosing the condition. The chronic cough and chest pain arise from lung involvement, while night sweats are a systemic symptom often linked to infections like TB, where the body experiences fevers and fluctuating temperatures. Understanding these symptoms helps in early detection and treatment of Tuberculosis.