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Comedones are small, flesh-colored, white, or dark bumps that give skin a rough texture. The bumps are caused by acne. They are found at the opening of skin pores. A solid core can often be seen in the middle of the small bump. Open comedones are blackheads and closed comedones are whiteheads.

Alternative Names

Skin bumps - acne-like; Acne-like skin bumps; Whiteheads; Blackheads


Acne - close-up of pustular lesionsBlackheads (comedones)Blackheads (comedones) close-upAcne, cystic on the chestAcne, cystic on the faceAcne, vulgaris on the backAcne, close-up of cysts on the backAcne, cystic on the back


Habif TP. Acne, rosacea, and related disorders. In: Habif TP, ed. Clinical Dermatology. 6th ed. Philadelphia, PA: Elsevier; 2016:chap 7.

Patterson JW. Diseases of cutaneous appendages. In: Patterson JW, ed. Weedon's Skin Pathology. 4th ed. Philadelphia, PA: Elsevier Churchill Livingstone; 2016:chap 15.