What is an elevated, firm, and rough lesion on the skin called?

An elevated, firm, and rough lesion on the skin is classified as a papule. Papules are small, raised bumps that can vary in size, texture, and color and are typically less than 1 centimeter in diameter. Their firmness and rough texture differentiate them from other skin lesions.

In the context of skin lesions, a nodule is similar but tends to be larger and deeper, generally over 1 centimeter in size, making it less suitable as the correct answer. A patch refers to a flat area that is different in color or texture from the surrounding skin and does not have an elevated quality, while a macule is also flat, smaller, and typically does not exhibit elevation or give a rough texture. Thus, the defining features of elevation and firmness pinpoint papules as the correct classification for this type of skin lesion.