What kind of lesion is a papule?

A papule is characterized as a small, solid, raised lesion on the skin. Typically, these lesions are less than one centimeter in diameter and can vary in color, often appearing as red, brown, or flesh-colored. Papules are a common manifestation in various skin conditions, including acne and dermatitis, and they can serve as indicators of underlying dermatological issues. The defining features of papules being solid and raised differentiate them from other skin lesions, such as those that are fluid-filled, discolored and flat, or large and painful. Understanding the nature of a papule is essential for proper skin assessment and diagnosis in practice.