Chest medicine, also known as pulmonology, is a medical specialty focused on diagnosing and treating diseases of the lungs and respiratory system. It covers conditions such as asthma, chronic obstructive pulmonary disease (COPD), pneumonia, tuberculosis, and lung infections. Pulmonologists use advanced diagnostic tools like chest X-rays, CT scans, and pulmonary function tests to assess lung health. Treatment options may include medications, inhalers, oxygen therapy, and lifestyle modifications. Proper respiratory care is essential for maintaining lung function and preventing severe complications.