Psoriasis vulgaris chronic-inpatient (plaque type): white-yellow, hyperkeratotic plaques on toes and the back of the foot that have been present for several months; no itching.
Melanoma malignes amelanotic: since early childhood a pigment mark is known at this site. Only in the last months this site has bled with slight traumas. There are no other complaints.
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).
Eczema, atopic: disseminated clinical picture with chronically stationary, blurred, itchy and painful, rough plaques, here infestation of the neck region.
erythema multiforme: post-herpetic erythema multiforme. here a healing phase with coarse lamellar scaling plaques. therapeutically only local nursing measures are necessary
Atopic dermatitis of the eyelid: Low dermatitic reaction; conspicuously marked brownish (halo-like) hyperpigmentation of the lower eyelid (slightly pronounced in the upper eyelid area); unpleasant, permanent itching.
Lichen simplex chronicus. 9 x 5 cm measuring, scaly, slightly raised, red plaque with excoriated papulovesicles on the flank of a 61-year-old patient, persisting for several years. Chronically persistent itching for years, partly also burning.
Necrobiosis lipoidica: Discrete finding with slightly hardened plaque and atrophic surface (parchment-like puckering of the skin surface in the centre).
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