The most distinctive feature of a maculopapular rash is the pattern of macules and papules. A macule is a small, flat, discolored area of skin, and a papule is a small, inflamed, raised lesion.

Rashes can have macules, patches (flat spots at least 1 cm in size), papules (raised skin lesions less than 1 cm in size), plaques (raised skin lesions at least 1 cm in size), and more ...