The pulmonologist is a doctor who specializes in diseases of the respiratory system. It is responsible for diagnosing and treating conditions such as asthma, chronic bronchitis, chronic obstructive pulmonary disease (COPD), pneumonia, pulmonary fibrosis, lung cancer, and other diseases related to the lungs and airways. Additionally, the pulmonologist performs lung function tests and offers advice on the management and prevention of respiratory diseases. It is advisable to see a pulmonologist if you experience symptoms such as persistent cough, difficulty breathing, chest pain, or if you have a history of lung or respiratory diseases.