The respiratory system consists of the upper respiratory tract—which includes the nose, sinuses, and pharynx—and the lower respiratory tract, which includes the larynx, trachea, bronchi, and the lungs themselves. The respiratory tract can be affected by a wide variety of congenital or acquired conditions, ranging from infections and allergies to cancers, as well as functional disorders and malformations. The World Health Organization’s (WHO) globally recognized ICD-10 diagnostic classification system—short for International Classification of Diseases—categorizes these respiratory diseases in Chapter X under codes J00 through J99.
Specialists in respiratory system disorders have typically completed specialized training as pulmonologists, allergists, otolaryngologists, or thoracic surgeons. On the following pages, you can find detailed information about the causes, symptoms, diagnosis, and treatment of various lung and respiratory diseases. You will also find a selection of qualified specialists who specialize in treating these conditions.
Specialists in respiratory system disorders have typically completed specialized training as pulmonologists, allergists, otolaryngologists, or thoracic surgeons. On the following pages, you can find detailed information about the causes, symptoms, diagnosis, and treatment of various lung and respiratory diseases. You will also find a selection of qualified specialists who specialize in treating these conditions.

