A 10-month-old girl presents with a growing, itchy neck lesion. Stroking the lesion causes it to swell and redden. What is the likely diagnosis?
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. The lesion was rubbed firmly with a tongue depressor for 5 seconds, and within a few minutes it became edematous with a flare of surrounding erythema — a finding known as Darier’s sign. What is the most likely diagnosis?
What is the most likely diagnosis?
Cutaneous Mastocytosis, Darier’s Sign, Dermatology, Pediatrics, Solitary Mastocytoma
