Most common form of mastocytosis, characterized by multiple persistant small reddish brown hyperpigmented pruritic macules and papules.

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.

(maculopapular cutaneous mastocytosis) Maculopapular cutaneous mastocytosis (MCM) is a form of cutaneous mastocytosis (CM; see this term) characterized by the presence of multiple hyperpigmented macules, papules or nodules associated with abnormal accumulation of mast cells in the skin.

(urticaria pigmentosa/maculopapular cutaneous mastocytosis) The most frequent form of cutaneous mastocytosis. In children, the lesions tend to be papular, and are characterized by aggregates of elongated or spindle-shaped mast cells which fill the papillary dermis and extend into the reticular dermis. In adults, the lesions tend to have fewer mast cells compared to those in children. The lesions are located most commonly on the trunk, but they can be seen on the extremities, head and neck. (WHO, 2001)

Maculopapular cutaneous mastocytosis (also known as urticaria pigmentosa) is a common form of cutaneous mastocytosis characterized by brown patches or freckles on the skin that result from an abnormal collection of mast cells. The skin may be very itchy and rubbing may lead to hive-like bumps or fluid-filled blisters. The condition is...