What is Internal Medicine

Learn about the role of internists, subspecialties within internal medicine, and the impact of this medical specialty on patient care.

Introduction to Internal Medicine

Internal medicine is a medical specialty that deals with the prevention, diagnosis, and treatment of adult diseases. Physicians specializing in internal medicine are often referred to as internists or doctors of internal medicine.

Role of an Internist

Internists are trained to manage a wide range of conditions that affect the internal organs of the body. They are skilled in diagnosing complex illnesses and managing chronic diseases such as diabetes, heart disease, and hypertension.

Subspecialties within Internal Medicine

Internal medicine has several subspecialties, including cardiology, gastroenterology, and endocrinology. These subspecialties focus on specific organs or systems within the body and require additional training beyond internal medicine residency.

Case Study

For example, Dr. Smith is an internist who specializes in cardiology. He recently treated a patient with chest pain and shortness of breath. After conducting a series of tests, Dr. Smith diagnosed the patient with a blocked coronary artery and performed a successful angioplasty procedure to restore blood flow to the heart.

Statistics on Internal Medicine

According to the American College of Physicians, there are over 110,000 internists practicing in the United States. Internal medicine is one of the largest medical specialties in the country, and internists play a crucial role in providing comprehensive care for adult patients.


Internal medicine is a diverse and challenging field that requires a deep understanding of the complexities of adult diseases. Internists are dedicated to providing high-quality care for their patients and are essential members of the healthcare team.

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