figure 1

Acne vulgaris

Photograph courtesy of SpringerImages Database, Springer Publishing Company

  • Acne vulgaris

    1. A.

      Comedones are the hallmark clinical feature of acne: open comedones (black heads) and closed comedones (white heads)

    2. B.

      No comedones are seen in acne rosacea

    3. C.

      Lesions occur on the face, ears, chest, back, neck, and upper arms

figure 2

Acne vulgaris

Photograph courtesy of SpringerImages Database, Springer Publishing Company

  • Acne vulgaris

    1. A.

      Inflammatory papules, pustules, nodules, and scars may also be seen

    2. B.

      Lesions are in various stages of formation and resolution