Erythema chronicum migrans. 49-year-old female patient. skin lesions since 4-5 months. 22 cm in diameter, in the centre bright, at the edges clearly more reddened spot with a smooth surface. no subjective symptoms. in the upper third on the left side a small, more reddened papule is visible (bite site of the tick).
Carcinoma of the mucous membrane: centrally ulcerated, painless, slow-growing, rough, hard lump, which apart from the raised edge zones is impressive as an ulcer.
Angiokeratoma scroti et vulvae. chronically stationary, multiple, bluish to dark black, 0.2-0.5 cm large, smooth symptomless vesicles. the clinical picture is diagnostically conclusive.
Graft-versus-Host-Disease: brownish pigmented, partly also scleroderma-like skin changes in the area of the forearm and hand, approx. 6 months after bone marrow transplantation.
psoriasis palmaris et plantaris. sharply defined, clearly infiltrated, rough plaques with coarsening of the skin field. redness accentuated in the marginal area. extensive (parakeratotic) scaling. this finding is typical of non-pretreated psoriasis plantaris.
Transitory acantholytic dermatosis (M.Grover): a few weeks old, only moderately pruritic clinical picture with disseminated papules and also papulo vesicles; Nikolski phenomenon negative.
Dermatofibrosarcoma protuberans. single, chronically inpatient, over 3 years old, imperceptibly growing, 2 x 3 cm in size, very firm, painless, red and white, smooth nodule, which rests on a 7 x 5 cm large, flat raised, firm plaque.
actinomycosis (abdominal form). progressive fistulizing clinical picture in a 50-year-old patient since several years. the left half of the buttocks was infiltrated in a flat, board-like manner. no significant pain. besides blue-red coarse scarring, granulation tissue and fistulas with exudate (buttock center, Rima ani) are impressive.
Artefacts: Acutely occurring, mainly trunk-accentuated, sharply defined, partly bizarrely bordered, extensive reddening of easily accessible skin areas in a 27-year-old woman (left-handed). The back area is recessed, partly "hand-like" lesions, in the shown case preferably on the right side of the body.
Poikilodermia vascularis atrophicans: 72-year-old patient with a slowly progressive, varicolored-checked clinical picture of the skin, which has been present for > 15 years. the varicolored-checked skin is caused by reticular or stripe-shaped erythema and plaques. reticular or flat brown discoloration (hyperpigmentation) is also found. present is a "poikilodermatic mycosis fungoides".
dermatitis, adult seborrhoeic: partly small spots, partly blurred erythema with small lamellar scaly deposits. slight feeling of tension. no significant itching. skin changes have existed for years to varying degrees. in summer, clearly improved or completely disappeared.
Lichen planus mucosae: a dissociative transformation of the lesions of the lichen planus on the lips and oralmucosa, which has existed for about 1 decade, and at this stage a focal carcinomatous transformation has already been demonstrated.
Dermatitis solaris: Large, very painful erythema with beginning blister formation on the back of the foot. 30-year-old patient after several hours of sunbathing in the midday sun.
Acrodermatitis continua suppurativa, typical clinical picture. 1 year of recurrent course with progressive destruction of the fingernails. Subungual pus puddles on the right index finger.
Harlequin discoloration: Characteristically, there are strictly hemiplegic flat erythema with sharp midline demarcation on the trunk, face and genital region, and harlequin color change can occur in both healthy and otherwise diseased newborns.4
Psoriasis vulgaris. psoriatic erythroderma. spread of psoriasis vulgaris as a maximum variant over the entire integument in the form of a generalised redness with scaling. rapidly spreading clinical picture; strong feeling of illness; high loss of fluid and temperature.
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