Dermatitis herpetiformis. grouped, urticarial papules with erosions and crusts of 2-4 mm in size on light to deep red erythema. in the centre smaller polygonal vesicles. the colourful juxtaposition of different efflorescences is characteristic of dermatitis herpetiformis.
Lichen simplex chronicus: chronic plaque consisting of peripherally disseminated, solid, red papules confluent in the centre of the lesion; intermittent itching leading to unsuppressible scratching
Netherton syndrome: clinical picture already manifested in childhood with the formation of large, also circulatory, garland-like, brown-red or red surface-rough, scaly plaques; numerous type I sensitizations.
Porokeratosis linearis unilateralis: Multiple, chronically stationary, first appeared 2 years ago, since then persisting, on the lower abdomen half-sided localized, striped, 0.2-4.0 cm large, partly isolated, partly confluent to larger areas, brown, rough papules and plaques.
Generalized atopic eczema: Exacerbated, generalized seizure-like itchy dermatitis with multiple, chronically dynamic, symmetrical, blurred, red, rough, flat plaques as well as flat, dry scaling red spots in a 19-year-old female patient.
Stevens-Johnson syndrome: acutely occurring vesicular exanthema with characteristic bull's-eye erythema, plaques and blisters as well as extensive, painful erosions of red lips, lip mucosa, tongue and gingiva in an 18-year-old woman. Clear general feeling of illness.
Erysipelas, acute: under high fever, , within 2 days appeared, sharply limited flat, saturated redness and plaque formation of the left buttock. accompanying: painful regional lymphadenitis.
Lichen planus (classic type): itchy, polygonal, partially confluent, brownish-reddish papules on the right hand and right wrist of a 40-year-old man, existing for 8 weeks; independent of LP, strong, palmar hyperkeratoses exist, the development of which can be ascribed to the professional activity as floor layer.
Larva migrans. linear plaque, subepidermally located, tortuous itchy duct through Ancylostoma brasiliensis on the sole of the foot, existing since about 2 weeks.
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