TY - CHAP M1 - Book, Section TI - Seborrheic Dermatitis A1 - Hardin, J. Matthew A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason PY - 2021 T2 - The Atlas of Emergency Medicine, 5e AB - Seborrheic dermatitis represents a spectrum ranging from localized lesions to generalized exfoliative erythroderma. All ages are affected. Lesions have an erythematous base with a yellow, greasy scale. The scalp, external auditory canal, postauricular ear, eyebrows, eyelids, and face (especially the nasolabial folds) are common locations. Infants can have lesions at the above sites, but focal and confluent lesions are most common on the scalp and called “cradle cap.” Atypical presentations can occur in the axillae, umbilicus, chest, and inguinal folds. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/03/28 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181044142 ER -