This article was medically reviewed by Debra Jaliman, MD, a board-certified dermatologist with a private practice in New York City. The types of acne are blackheads, whiteheads, pustules, papules ...

Over areas of contact, athletes develop well-defined white umbilicated papules (see Figure 5). Any exposed skin that comes in contact with an infected athlete or a colonized surface risks ...

Pityriasis rosea (PR) is an acute inflammatory skin disorder characterized by erythematous scaling papules and macules. PR lesions are most commonly distributed over the trunk and proximal ...

Physical examination reveals localized plaques composed of clusters of flesh-colored to reddish follicular papules on the left arm. Lichen spinulosus typically manifests as grouped, skin-colored ...