Commentary| Volume 35, ISSUE 2, P115-117, March 2017

The changing faces of acne, rosacea, and hidradenitis suppurativa

      This issue of Clinics in Dermatology is dedicated to three skin diseases that attract continuous scientific interest and represent a considerable part of clinical practice: Acne (sometimes referred to as acne vulgaris), rosacea (once called acne rosacea), and hidradenitis suppurativa (formerly called acne inversa). The alternate but similar nomenclature was based on some apparent shared features, including common clinical lesions (papules, nodules, pustules, cysts, pseudocomedones); the pilosebaceous unit being involved as the target organ; the involvement of the face for acne and rosacea; and the fact that hidradenitis may traditionally form part of the follicular occlusion tetrad together with acne conglobata, dissecting cellulitis of the scalp, and pilonidal cyst. Over the years, laboratory and clinical research has pursued refining further distinct pathogenetic, clinical, and therapeutic characteristics for acne, rosacea, and hidradenitis suppurativa. During this pursuit, exciting scientific knowledge has emerged and is highlighted in this issue.
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