sarcoidosis. small-nodular, disseminated sarcoidosis in a 45-year-old man. development of the depicted skin lesions over a period of 6 months. findings: extensive, reddish-brownish, completely asymptomatic, little infiltrated, barely pinhead-sized flat papules, which have conflued to flat plaques. recess of the contact point of the wristwatch. no evidence of system involvement.
Reticulosis, pagetoid (disseminated type Ketron and Goodman): For several years slowly migrating, partly anular, partly garland-shaped, little itchy, brown-red, only minimally elevated, broadly margined plaques with parchment-like surface.
Psoriasis intertriginosa. solitary, chronically stationary, large, sharply edged, especially after sweating itching, homogeneous, red, rough, scaly plaque. further, similar skin changes on elbows and knees. up to now extreme resistance to therapy.
sarcoidosis, plaque form. nodules and plaques that are easily distinguishable from the surrounding area. foci are movable on the support; scaly-crusted surface.
Pityriasis rubra pilaris (adult type): Sharply set off towards the wrist (difference to hyperkeratotic palmar eczema), alternating, flat palamarkeratosis.
Eczema, atopic. chronic, recurrent, itchy red spots and slightly raised red plaques on the cheeks and forehead of an 8-month-old girl; multiple, disseminated, partly crusty scratch excoriations are also visible.
Eczema, hyperkeratotic rhagadiform eczema of the hands. 3-year-old man: Multiple, chronically recurrent, blurred, flat, yellowish-brown, rough, scaly plaques on the right hand of a 21-year-old man. Furthermore, several small, painful rhagades and smaller, artifactual excoriations are visible.
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!).
Psoriasis with pronounced affection of the buttocks region. The symmetrical affection of the buttocks region can be seen as Köbner phenomenon. Circumscribed a previously known keratosis follicularis.
lupus erythematodes chronicus discoides: already longstanding, blurred, red, butterfly-shaped red plaques. delicate scarring beginning at the bridge of the nose. no systemic autoimmune phenomena.
Toxic epidermal necrolysis. detailed view of a solitary, acutely occurring, perimamillary, sharply defined, slightly weeping, extensive, erosive detachment of the skin. the sample biopsies showed a vacuum-associated interfacial dermatitis with epidermal keratinocyte necroses.
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