Urticaria Pigmentosa is a benign type of cutaneous mastocytosis that I occasionally encounter in both my The Woodlands dermatology and Conroe dermatology offices. Urticaria Pigmentosa accounts for the majority of childhood mastocytosis cases. Clinically, Urticaria Pigmentosa appears as multiple red/brown indurated papules and nodules. Blistering can occur in the lesions especially when they are rubbed as this causes a local histamine release. Most cases last for a few years and then spontaneously resolve prior to puberty.