dermatomyositis: reflected light microscopy. hyperkeratotic nail folds. pathologically enlarged and torqued capillaries. older bleeding into the nail fold.
Dermatomyositis, malignoma-associated erythema in the area of the distal back of the hand and the sides of the fingers (= Gottron-signs) in a 67-year-old patient with bronchial carcinoma.
Lichen planus exanthematicus: shiny polygonal papules that aggregate to larger rhomboid structures during confluence; characteristic whitish, waxy veils on the surfaces (Wickham phenomenon); in places striped arrangement (Koebner phenomenon).
Bending atopic eczema: Skin lesions in a 20-year-old girl with intermittent course since the age of 4 years. Pollinosis (hazelnut, birch) known. In the area of the large joint bends accentuated, blurred, extensive, reddened, moderately itchy plaques. Skin field coarsened (lichenification).
Psoriasis arthropathica: Acralaccentuated psoriasis vulgaris (features of acrodermatitis continua supuativa) with severe nail dystrophy; distended, painful peripheral finger and middle joints as a sign of psoriatic arthritis.
Multiple mastocytomas: disseminated, flat, brownish-reddish, itchy, smooth patches and plaques on the trunk and extremities of an 8-month-old boy; attention should be paid to the intact surface pattern of the field skin over the lesional skin.
Tinea manuum. flat, borderline, little scaling flock with single follicular papules in the area of the back of the hand and forearm, little itching, for several months.
Erythema nodosum (affection of the upper and lower extremities): acute, multiple inflammatory, painful, clearly consistency increased plaques and nodules; accompanying arthritis of the right ankle joint.
Nummular dermatitis: chronic, for 8 weeks existing, localized on the back of the hand, approx. 6 cm in size, reddish, raised, partly eroded, partly crusty plaques in a 47-year-old man; no evidence of psoriasis vulgaris or atopic diathesis.
Tinea manuum. flat, borderline, rough (little scaling), slightly prominent papules and plaques with single follicular papules in the back of the hand. little itching.
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