Which type of skin lesion is an inflamed, elevated pimple that contains pus?

A pustule is a type of skin lesion that is characterized by being inflamed and elevated, with a central core containing pus. This is the defining feature of a pustule, distinguishing it from other skin lesions. The presence of pus, which is a thick fluid composed of white blood cells, dead skin, and bacteria, often indicates an infection or an inflammatory process taking place within the skin.

In contrast, a verruca, commonly known as a wart, is a benign growth caused by the human papillomavirus and does not typically contain pus. A papule is a small, raised bump on the skin that is solid and can vary in color, but it does not indicate the presence of pus. Papillae refer to small, nipple-like projections on various tissues in the body, and they are not lesions in themselves, nor do they contain pus.

Understanding these distinctions is crucial, especially in the context of skin health and treatment, as pustules are often associated with conditions such as acne or other inflammatory skin disorders.