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Macules may be of. any size or color. A macule greater than 2 cm. in diameter is called a patch. Ex: cafÃ©-au-lait: Mongolian spot; freckle. 2. Papule: Papule is a solid, elevated lesion with no visible fluid which may be up to Â½. cm. in diameter. The elevation may be accounted for by metabolic deposits, infiltrates, or hyperplasia of cellular elements, etc. A papulosquamous lesion is a papule with desquamation (scaling). 3. Nodules: Nodules are forms of papules, but are larger and deeper.
Doctors use specific terms to describe rashes. A macular rash refers to flat, small red patches on the skin, while a papular rash refers to small raised red bumps. If both rash symptoms and signs are present, a rash is called maculopapular. Scaling, blister formation, or ulceration of the skin may be present with a rash. A rash with accompanying blisters is termed a vesicular rash. Itching (pruritus) may or may not accompany a rash.