Internal medicine is a field of medical practise which involves the treatment of adults and deals with the prevention, diagnosis, and treatment of diseases in adults.

Internal medicine specialists primarily treat adults and in rare cases treat children. An internal medicine specialist with combined pediatric training, however, can treat children.

Not all internal medicine specialists perform surgery except a trained specialist who has additional qualification and training in specific surgical procedures.

Yes. Internal medicine specialists are the same as internists.

Yes. Internal medicine has a number of specialties, such as:
1. Haematology
2. Allergy and immunology
3. Cardiovascular disease
4. Gastroenterology
5. Oncology
6. Nephrology
7. Rheumatology
8. Pulmonary diseases