Whiteheads are small, white, raised bumps on the skin. They form when oil and skin collect in the pores. Whiteheads are also known as closed comedones and pimples. They occur with acne, often on the face, chest and back.
Closed comedones; Pimples
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.