Erythema anulare centrifugum: Characteristic single cell lesion with peripherally progressing plaque, which is peripherally palpable as well limited (like a wet wolfaden), flattens centrally and is only recognizable here as a non-raised red spot. DD Mycosis fungoides. Histological clarification necessary.
Tinea corporis:Acute, solitary, ring-shaped, approx. 2.5 cm large, sharply defined, itchy plaque, which has existed on the right wrist for several weeks, is increased in consistency at the edge and has fine lamellar scales, and has healed centrally in a 12-year-old girl (pathogen: Mikrosporum canis).
Psoriasis palmaris et plantaris (plaque-type): Patient with palmar plaque psoriasis, infestation of the backs of the hands and fioniasis with striped keratotic plaques.
Drug reaction, fixed. 3-day-old, roundish, sharply defined, reddish-brown plaque on the lower leg of a 20-year-old female patient with a diameter of about 4.0 cm.
Lichen planus verrucosus: multiple, chronically stationary, moderately sharply defined, itchy, whitish, rough papules and plaques on the backs of the hands. no scratch excoriations. reticular, white pattern of the oral mucosa.
Erythema anulare centrifugum. detail view: clearly borderline (well palpable border) and centrally fading plaque on the abdomen of a 54-year-old patient. underlying disease: M. Wegener.
Chilblain lupus: reflected light microscopy. dilated, corkscrew-like vessels (arrows) on the dorsal side of the fignerendl song. s. clinical picture. encircles the anemic pressure point of the reflected light microscope
Eczema, atopic. chronic, recurrent itchy red spots and slightly raised, flat, rough red plaques on the back of the left hand, the back and the side edges of the fingers of an 8-month-old girl. Furthermore multiple, disseminated, partly crusty scratch excoriations and isolated rhagades are visible.
Mycosis fungoides (plaque stage): 72-year-old male (suction plaque stage of Mycosis fungoides); multiple, disseminated, 2.0-10.0 cm large, occasionally slightly itchy, only slightly increased in consistency, slightly scaly red, poikilodermatous plaques; conspicuous atrophy of the lesional skin (characteristics of the " Granulomatous slackskin")
Dermatomyositis, malignoma-associated, occurrence of punched-out ulcerations on the floor of indurated, livid erythema in a 67-year-old patient with bronchial carcinoma.
Erythema anulare centrifugum: Large-area, polycyclically limited, scaly erythema with an elevated wall on the upper and lower arm of a 64-year-old woman.
lichen (planus) verrucosus. multiple, chronically stationary, blurred, itchy, reddish, rough (wart-like) papules and plaques on the backs of the hands. no scratch excoriations. reticular, white pattern of the oral mucosa.
Lichen planus classic type: for several months, red, itchy, polygonal, partially confluent, smooth, shiny papules that have remained in place for several months
Mycobacterioses, atypical. 3 months old, developing from a red papule, firm, covered with whitish scales, free of scales at the edges, red-brown, completely painless nodule. culturally proven infection by M. marinum.
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