What specialty does House's medical department have in House, M.D.?

House's medical department in House, M.D. specializes in diagnostic medicine.

The Department of Diagnostic Medicine investigates illnesses that remain unexplained after ordinary tests and specialist consultations. House leads a small team that gathers clues, proposes competing diagnoses, and performs urgent interventions when a patient's condition changes.

Diagnostic medicine is a real part of clinical practice, but the show's department is unusually dramatic and autonomous. In real hospitals, difficult cases commonly involve multidisciplinary consultation rather than one physician making every decision alone. The series heightens the process for storytelling, often compressing complex testing into a short television timeline.

House's team is sometimes described as an infectious-disease department because House has that background, but the department's official function is broader. It handles unexplained cases involving many organ systems, including neurological, autoimmune, infectious, toxicological, and genetic conditions.