Which term describes a wart characterized by a hard and rough bump commonly found on hands or feet?

The term that describes a wart characterized by a hard and rough bump commonly found on hands or feet is verruca. Verrucas are caused by the human papillomavirus (HPV) and are often identifiable by their rough, raised texture and distinctive appearance. They frequently occur in areas that are subjected to pressure and friction, such as the soles of the feet or palms of the hands.

The other terms refer to different skin conditions. Milia are tiny white cysts that typically appear on the face and do not have the same rough texture as verrucas. Acne refers to a condition involving the clogging of hair follicles and oil glands, characterized by pimples, cysts, and blackheads, and is not related to the hard bumps found in warts. Comedo is another term for a clogged hair follicle, which can be open (blackhead) or closed (whitehead), and is associated with acne rather than warts. Understanding these distinctions clarifies why verruca is the correct answer in this context.