Internal medicine is the medical specialty concerned with the diagnosis, management and nonsurgical treatment of unusual or serious diseases. Specialists in general medicine are commonly called, physicians. Because their patients are often seriously ill or require complex investigations, physicians are very work intensive in the hospitals. The department of Medicine initially covered all specialities till super-specialities like Gastroenterology and Nephrology were created, to which Neurology was added and are now working as full-fledged departments. The department continues to have specialities such as Oncology, Respiratory and Sleep Medicine and Endocrinology. It has consultants who are capable of diagnosing and treating complicated medical problem in the fields of diabetes and endocrinology, rheumatology, pulmonology, clinical haematology, medical oncology, infectious diseases, HIV and AIDS and primary immunological disorders.