Erosive pustular dermatosis of the scalp after perinatal scalp injury.

We report four infants born with necrotic caput succedaneum that led to a scarring alopecia with ongoing inflammation and persistent scale-crust. These lesions did not significantly improve with topical or oral antibiotics, but did respond somewhat to topical corticosteroids. Alopecia with chronic erosive scale-crust and a moderate response to topical corticosteroids are findings consistent with a diagnosis of erosive pustular dermatosis of the scalp.