Beazewyn
Darier’s Sign in Solitary Mastocytoma
A previously healthy 10-month-old girl was referred to the pediatric dermatology clinic with a 6-month history of an intermittently itchy and swollen skin lesion on her neck that had gradually increased in size. On physical examination, a thin, well-demarcated, tan plaque was seen on the neck (Panel A). The lesion was rubbed firmly with a