Urticaria Pigmentosa

**Definition:** The most common form of cutaneous mastocytosis (MASTOCYTOSIS, CUTANEOUS) that occurs primarily in children. It is characterized by the multiple small reddish-brown pigmented pruritic macules and papules.

**Tree numbers:** - C04.557.450.565.465.500.850 - C04.588.805.309.850 - C17.800.621.893 - C17.800.882.356.850 - C20.762.750.563.850

**Synonyms:** - Maculopapular Cutaneous Mastocytosis