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What is the main feature of a Furuncle?

  1. A firm nodule with a central, hard, pus-filled core

  2. A red scaly rash

  3. A honey yellow, crusted lesion

  4. Small vesicles and watery discharge

The correct answer is: A firm nodule with a central, hard, pus-filled core

A Furuncle, also known as a boil, is a skin infection that occurs in a hair follicle or sweat gland. The main feature of a furuncle is a firm, raised nodule that may be red, swollen, and painful. It typically has a central, hard, pus-filled core, which is what distinguishes it from other skin infections such as a red scaly rash (B) or honey yellow crusted lesion (C). Small vesicles and watery discharge (D) may be seen in other skin conditions, but are not typically a feature of a furuncle.