Successful treatment of generalized childhood Schamberg's disease with narrowband ultraviolet B therapy.

Pigmented purpuric dermatoses are a group of dermatoses characterized by petechia and hyperpigmented macules that occur predominantly on the lower extremities. Although it is most commonly seen in adults, this disease can also affect children. Phototherapy has been shown to be effective in some cases in the literature. Here, we present two cases of Schamberg's disease that improved rapidly with narrowband ultraviolet B (UVB) therapy. To our knowledge, they were the first pediatric cases of successful narrowband UVB therapy in this disease.