Internal medicine is a medical specialty that focuses on the prevention, diagnosis, and treatment of diseases in adults. Internists, also known as internal medicine physicians or internists, are skilled in managing complex medical conditions and providing comprehensive care for a wide range of health issues. They often serve as primary care physicians, coordinating care across various specialties and addressing both acute and chronic illnesses. Internal medicine encompasses a broad scope, including internal organ systems, and internists are trained to understand the interactions between different diseases and the overall health of the patient.