The phrase "area of medicine" refers to a specific branch or specialty within the field of medical practice. This can include various sub-disciplines such as pediatrics, obstetrics and gynecology, psychiatry, surgery, internal medicine, radiology, among others. The term is often used interchangeably with "specialty" or "subspecialty," which refers to a specific area of medical practice that requires additional training beyond the basic medical degree. In summary, an "area of medicine" can be thought of as a particular focus within the broader field of healthcare and medical treatment.