Acne vulgaris physical examination

	Acne vulgaris Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Jesus Rosario Hernandez, M.D. [2]

Physical Examination

Skin

The following images depict the typical way that a patient with acne may present. As shown in the images, it is possible to develop some form of acne at any age.

Baby acne is usually seen on the cheeks, chin, and forehead. It can be present at birth but usually develops around 3 to 4 weeks of age. Baby acne occurs when hormonal changes in the body stimulate oil glands in the baby's skin. The condition can look worse when the baby is crying or fussy, or any other instance that increases blood flow to the skin. Baby acne is harmless and usually resolves on its own within several weeks.
Acne lesions frequently contain pus. This close-up photograph shows small acne pustules with surrounding inflammation (erythema).
Acne frequently occurs on the back. Here, there are 2 to 6 millimeter wide erythematous (red) pustules with large open and closed comedones. Permanent scarring may follow a severe case of acne. Men are more often affected on their shoulders and back than are women.
Acne affects the areas of the skin that contain sebaceous glands, including the face, upper chest, and back. Acne occurs most commonly during adolescence. Many new treatment regimens are available for acne, especially for the most severe types.
Acne may persist into adulthood.
Acne is a skin condition that causes whiteheads, blackheads, and inflamed red lesions to form. These growths are commonly called pimples or "zits." Three out of four teenagers have acne to some extent.