A Persistent Cough May Not Be Just Allergies — It Could Be a Sign of Tuberculosis

A persistent cough is one of the most common symptoms people experience. Many assume it is caused by allergies, changing weather, or a common respiratory infection. However, if a cough continues for an extended period without improvement, it is important to seek medical evaluation, as it may be a sign of pulmonary tuberculosis (TB).

What Is Tuberculosis?

Tuberculosis (TB) is an infectious disease caused by the bacterium Mycobacterium tuberculosis. It most commonly affects the lungs and can spread from person to person through airborne droplets released when an infected individual coughs, sneezes, or speaks.

Warning Signs and Symptoms

If you experience any of the following symptoms, medical evaluation is recommended:

• A cough lasting longer than 2–3 weeks
• Cough with sputum or blood-streaked sputum
• Unexplained weight loss
• Loss of appetite
• Low-grade fever, especially in the afternoon or evening
• Excessive night sweats
• Fatigue, weakness, or feeling unusually tired

Who Is at Higher Risk?

Certain groups are at increased risk of developing tuberculosis, including:

• Individuals who live or work in close contact with someone who has TB
• People with weakened immune systems
• Older adults
• Individuals with chronic medical conditions, such as diabetes or chronic lung disease
• Regular smokers

Tuberculosis Is Curable When Detected Early

Today, tuberculosis can be successfully treated with appropriate medications taken consistently and for the full duration prescribed by a physician. Early diagnosis not only improves treatment outcomes but also helps prevent the spread of infection to others.

Do Not Ignore a Persistent Cough

If you have been coughing for more than 2–3 weeks or have other concerning symptoms along with your cough, consult a healthcare professional for proper evaluation. Early diagnosis and treatment can make a significant difference in both recovery and disease prevention.