Figure 1.181. This is a lesion of bullous mastocytosis (urticaria pigmentosa) that presented at birth in this infant as a solitary bullous lesion on the sole of the right foot. Note the area of redness surrounding the lesion (dermatographism) following examination of the lesion. Spontaneous remission of the skin lesions usually occurs. It is rare for lesions to appear after the age of 3 years. Differential diagnosis includes bullous impetigo, epidermolysis bullosa, incontinentia pigmenti, and bullous congenital ichthyosiform erythroderma.
Was this article helpful?