Internal medicine or general medicine is the medical speciality dealing with the prevention, diagnosis, and treatment diseases in adult .
Internal medicine physicians are skilled in the management of patients who have undifferentiated or multi-system disease processes. Internal medicine physicians care for hospitalized and ambulatory patients and may play a major role in teaching and research.
Because internal medicine patients are often seriously ill or require complex investigations, Internal medicine physicians do much of their work in hospitals. Internal medicine physicians often have subspeciality interests in diseases affecting particular organs or organ systems.
Infectious disease also known as infectious diseases is a subspeciality of Internal Medicine dealing with the diagnosis, control and treatment of infections.