How does seborrheic dermatitis present in children?
| | Fig. 8.4 Seborrheic dermatitis. A, Infant demonstrating characteristic scalp seborrheic dermatitis commonly known as 'cradle cap.' B, Adult demonstrating yellowish-red, sharply demarcated lesions with greasy scale. (Courtesy of James E. Fitzpatrick, MD.) | Retention hyperkeratosis of the scalp known as “cradle cap” (Fig. 8-4A) is the most common presentation, while “napkin dermatitis” in the diaper area is the next most frequent. The primary lesions are round to oval patches of dry scales or yellowish-brown, greasy crusts with variable erythema. Seborrheic dermatitis presents in infants 2 to 10 weeks of age and generally clears by 8 to 12 months of age before reappearing at puberty. However, there are exceptions, and children of all ages may have this condition, even though they do not produce sebum as much as adults do.
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