Respiratory illnesses refer to a group of diseases and disorders that affect the respiratory system, including the lungs, airways, and other parts of the respiratory tract. Common respiratory illnesses include asthma, chronic obstructive pulmonary disease (COPD), pneumonia, bronchitis, and influenza. These illnesses can be caused by a variety of factors, such as infections, environmental pollutants, smoking, and genetics. Symptoms of respiratory illnesses may include coughing, wheezing, chest pain, shortness of breath, and difficulty breathing. Treatment for respiratory illnesses typically involves a combination of medications, lifestyle changes, and in some cases, oxygen therapy or surgery. Management of respiratory illnesses is important for maintaining lung function and overall health.