MONDO_0019316 (maculopapular cutaneous mastocytosis) (MCM) is a form of cutaneous mastocytosis (CM) characterized by the presence of multiple hyperpigmented macules, papules or nodules associated with abnormal accumulation of mast cells in the skin. Also known as: UP/MPCM, urticaria pigmentosa, urticaria pigmentosa/maculopapular cutaneous mastocytosis.