Which term refers to an elevated, fluid-filled lesion?

The term that refers to an elevated, fluid-filled lesion is "vesicle." Vesicles are small blisters that are filled with fluid and are typically less than 1 cm in diameter. They can occur in various skin conditions and are often associated with infections, allergic reactions, or inflammatory processes.

In contrast, a papule refers to a solid, raised lesion that is typically less than 1 cm in diameter, without fluid. A patch is a flat, discolored area on the skin, larger than a macule, and it is not elevated nor fluid-filled. A plaque describes a raised, often scaly lesion, which is also solid and typically broader than 1 cm. Understanding these definitions helps in the accurate identification of skin lesions and appropriate diagnosis in clinical settings.