How is an inflamed pimple containing pus referred to in dermatology?

In dermatology, an inflamed pimple that contains pus is specifically referred to as a pustule. This term is used to describe a small, raised bump on the skin that is filled with a thick fluid or pus, often appearing red and inflamed. Pustules are common in conditions such as acne, but they specifically indicate the presence of pus within the lesion.

The term "comedo" refers to a clogged hair follicle in the skin, which can be open (blackhead) or closed (whitehead). While both comedones and pustules can occur in acne, they are distinct in their characteristics.

"Acne" is a broader term that encompasses various types of skin lesions, including pustules, comedones, and others. It describes the overall condition rather than identifying a specific type of lesion.

"Lesion" is a general term in dermatology that means any abnormal change in skin tissue; this can include a wide variety of skin disorders and does not specifically indicate the presence of pus. It can refer to any type of damaged or altered skin, including tumors, ulcers, and more.

Therefore, the term that most accurately describes an inflamed pimple filled with pus is pustule.