Internal medicine focuses on adult healthcare, and particularly on the treatment, prevention, and diagnosis of adult diseases. Internal medicine focuses on creating a relationship between doctor and patient, and physicians who practice internal medicine often act as consultants for other physicians who are not as well-trained in diagnosis. Unlike focused roles, which focus on specific parts of the body and the ailments that affect them, doctors of internal medicine (sometimes referred to as an "internist," not to be confused with interns) are equipped to diagnose almost any known ailment. Doctors of internal medicine also treat most common problems, whether through medicine or surgery, but may not be as a doctor operating within their specialty.