Abstract

Sutton's nevus or halo nevus is characterized by the development of an achromic halo around one or more pigmented melanocytic nevi. Mastocytosis comprise a heterogeneous group of diseases characterized by the abnormal accumulation of mast cells in one or more organs. Two types are recognized: systemic and cutaneous. Among the cutaneous ones, the most frequent are urticaria pigmentosa and solitary mastocytoma. We present the case of a 12-year-old boy who presented with lesions compatible with halo nevi and urticaria pigmentosa.

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