Britannica AI Icon

doctor

medicine
Also known as: physician

Quick Summary

Medicine is the practice concerned with maintaining health and preventing, alleviating, or curing disease. A doctor, or physician, is a person specially trained in healing human medical disorders. The term "doctor" originated in the Middle Ages and evolved to refer to those with advanced degrees, including medical professionals.1234

Since World War II, medical knowledge and technology have expanded rapidly, leading to increased specialization within medicine. Major specialties include internal medicine, surgery, pediatrics, and psychiatry, among others. Advances in fields like genetics, microbiology, and pharmacology have significantly improved disease understanding and treatment.5

Doctors in teaching hospitals have dual roles: caring for patients and educating students through lectures and ward rounds. The process of diagnosing a patient involves gathering medical history, conducting examinations, and ordering tests to identify the cause of illness, a process known as clinical decision making.67

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.