Parapsoriasis en plaques,grandes plaquesForm (Parapsoriasisen grandes plaques): completely symptom-free, yellow-brown (purpura pigmentosa-like), sharply defined spots; only when the skin is wrinkled is a cigarette-paper-like pseudoatrophic architecture of the skin surface discernible (important diagnostic sign!).
Granuloma anulare disseminatum. general view: Non-painful, non-itching, disseminated, large plaques on the abdomen of a 43-year-old female patient. no diabetes mellitus.
Erythrokeratodermia figurata variabilis. very irregularly distributed, bizarrely configured, polycyclic, scaly plaques with alternating clinical expressivity and acuteness as well as very characteristic peripheral scaly ruffs (buttocks) in a 6-year-old boy. few symptomatic skin lesions existing since 2 years.
Psoriasis seborrhoeic type: Chronic recurrent, sharply defined red spots and plaques, which are localized in the chest area of a 70-year-old man and run along the anterior sweat channel.
Differential diagnosis "candidiasis intertriginous" : present psoriasis intertriginosa: infection-related acute relapsing activity of a long term known psoriasis vulgaris.
transient acantholytic dermatosis. detail enlargement from previous overview. initial papules, about 1-2 mm in size, deep red with slightly eroded, occasionally scaly surface, characterize the picture. in addition, older plaques (top right) resulting from confluent papules with slight marginal scaling are visible. the nikolski phenomenon is negative.
Paget, M. of the nipple. unilateral, symptom-free, therapy-resistant, red, painless, slowly growing plaque of the nipple existing for several months. In the meantime, extensive infiltration of the skin beyond the areola. Previously, there was an erythema of the nipple which did not heal under an anti-eczematous therapy.
Tinea corporis in immunodeficiency. Marginal area of the lesion with broad, raised, scaly margins. Centrally located healing pattern with scaly plaques and papules between normalized skin areas.
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