What is the size and characteristic of a papule?

A papule is characterized as a small, raised, solid pimple or swelling on the skin that is less than 1 centimeter in diameter. This definition highlights that papules are not flat; they are elevated compared to the surrounding skin, making them easily identifiable. Being typically around 1 cm allows for differentiation from other skin lesions, such as nodules, which are larger, or spots that may be flat. The raised nature of papules is key in dermatology, as it signifies an inflammatory response, infection, or other dermatological conditions. Understanding these characteristics is essential for diagnosing various skin conditions and developing appropriate treatment plans.