What describes a small, raised lesion with clear fluid typical of a blister?

A small, raised lesion filled with clear fluid that is typically associated with blisters is known as a vesicle. Vesicles are defined as fluid-filled sacs that form on the skin, usually as a response to friction, burns, or viral infections, among other causes. Their distinguishing characteristic is that they are small and contain serous fluid, giving them a translucent appearance.

In contrast, a pustule is a raised lesion that contains pus, often resulting from bacterial infections or inflammatory conditions, rather than clear fluid. A crust refers to a dried exudate, such as serum, blood, or pus, that forms on the surface of the skin during the healing process, not a raised fluid-filled structure. A papule is a small, solid, raised lesion without fluid, typically measuring less than 1 centimeter in diameter, and is often associated with conditions like acne or eczema.

Recognizing the characteristics of these different skin lesions is vital for accurately diagnosing and understanding various skin conditions.