Urticaria pigmentosa: variously large, disseminated, flat, oval or round, brownish-red spots on trunk, buttocks and thighs; 27-year-old female patient. Continuous proliferation of spots for years. No evidence of systemic infestation. See findings 10 years later.
Urticaria pigmentosa: approx. 0.5-1.0 cm in size, disseminated, roundish, brownish-red spots. Only when rubbed, the spots become more red with accompanying itching. Increased redness and itching even in warm showers or baths.
Purpura pigmentosa progressiva: aetiologically unexplained (medication?) pronounced clinical picture that has been changing for several months, with symmetrically distributed, disseminated, anular, non-expressable(!), non-itching, yellow-brown, spots (detailed picture).
Purpura anularis teleangiectodes: clinical picture that has existed for several months with anular, borderline reddish-brown (not push-off) spots and plaques; no itching
Amyloidosis macular cutaneous: Large, long-standing, continuously spreading, blurred, symmetrical, light to medium brown spots and plaques; histological evidence of the amyloid.
Urticaria pigmentosa adultorum: Classical form of cutaneous mastocytosis (excess of mast cells in the skin) with multiple red patches and wheals (positive Darier sign, due to the friction of the trousers) clearly protruding in the buttock area, and light brown in the adjacent lumbar area, 0.1-0.3 cm in size.
Urticaria pigmentosa: Generalized, macular, livid-red to brownish, partly confluent "exanthem-like" clinical picture on the trunk of a 41-year-old woman.
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