What skin condition is characterized by the formation of a raised, solid lesion typically filled with pus?

The formation of a raised, solid lesion typically filled with pus is indicative of a furuncle. A furuncle, commonly known as a boil, arises from an infection of the hair follicle or oil gland, leading to a painful, swollen area that is filled with pus. This type of skin condition usually presents as a red, inflamed bump on the skin that can range in size and is often tender to the touch.

Understanding the characteristics of a furuncle helps differentiate it from other skin conditions. For example, a cyst is a closed sac-like structure that can be filled with fluid or semi-solid material, and it may not necessarily be filled with pus or accompanied by inflammation. A steatoma, often referred to as a sebaceous cyst, is a type of cyst formed from a sebaceous gland and typically contains sebum rather than pus. A macule is a flat, discolored spot on the skin without any elevation or texture change, which clearly does not relate to lesions filled with pus.

Thus, the defining symptoms and nature of a furuncle make it the correct answer to the question regarding skin conditions characterized by raised, solid lesions filled with pus.