Internal medicine is a broad term that refers to the medical specialty concerned with diagnosis, treatment, and prevention of diseases in adults. It is also sometimes referred to as general medicine or primary care. There are several synonyms for internal medicine, such as adult medicine, general practice, and family medicine. While these terms are often used interchangeably, each has its unique meaning. Adult medicine typically deals with conditions affecting patients over 18 years old, while general practice emphasizes on providing primary care to patients of all ages. Family medicine, on the other hand, is a comprehensive field that covers the health and wellbeing of entire families. Regardless of the synonym used, internal medicine remains a vital component of healthcare, providing expert care for a wide range of illnesses.