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| Fig. 62.4 Pityriasis alba, demonstrating hypopigmented macules of the face. (Courtesy of James E. Fitzpatrick, MD.) |
Pityriasis alba is seen primarily in children with darker skin types, and it manifests as hypopigmented macules on the face and/or upper arms (Fig. 62-4). The lesions lack a distinct border and may have overlying fine scale. Patients often report a history of atopic dermatitis. Some studies show boys may be preferentially affected. While many consider pityriasis alba to be a mild form of postinflammatory hypopigmentation, it is often considered a separate entity. Although the condition typically resolves with time, brief treatment with low-potency topical corticosteroids and/or generous emollients may be helpful.
Blessmann Weber M, Sponchiado de Avila LG, Albaneze R, et al: Pityriasis alba: a study of pathogenic factors,
J Eur Acad Dermatol Venereol 16:463–468, 2002.
