Urticaria pigmentosa: approx. 0.5-1.0 cm in size, disseminated, roundish, brownish-red spots. Only when rubbed, the spots become more red with accompanying itching. Increased redness and itching even in warm showers or baths.
Dermatitis medusica: In this general view, 3 weeks after the contact event, a solitary, linearly shaped, rough, strongly increased in consistency, flatly elevated, finely lamellar scaling plaque with scabbing in a 50-year-old man is shown. During a Mediterranean holiday, painful punctures on the back caused by contact with a jellyfish were first shown. The tentacles of the cnidarian could only be removed from the back with difficulty, then formation of bleeding at the adhesion sites. Immediately after contact, formation of streaky, pale erythema.
Paget, M. of the nipple. unilateral, symptom-free, therapy-resistant, red, painless, slowly growing plaque of the nipple existing for several months. In the meantime, extensive infiltration of the skin beyond the areola. Previously, there was an erythema of the nipple which did not heal under an anti-eczematous therapy.
Xanthogranuloma adultes: 15 x 12 cm, solid, painless, skin-coloured tumour that has been growing slowly for several years; no systemic involvement detectable.
Melanoma, malignant, nodular. solitary, chronically active, growing rapidly in the last 4 weeks, occasionally bleeding slightly, 0.7 cm high, smooth, black lump on brown plaque.
Mycosis fungoides tumor stage: for years, previously known mycosis fungoides; for about several months, formation of less symptomatic red plaques and nodules,
Mycosis fungoides follikulotrope: 10-year-old girl with generalized folliculotropic Mycosis fungoides. foudroyant course of the disease which made a stem cell transplantation necessary
Graft-versus-host disease. 3-15 months after transplantation, a reaction due to the transmission of allogenic immunocompetent T-lymphocytes. extensive dermatosclerosis with numerous, bizarre, skin-coloured papules and plaques.
Lichen simplex chronicus in dark skin. 0.1-0.2 cm large, marginally disseminated, firm brown-black (red shade is missing) papules, which have confluated into a flat plaque in the centre of the lesion. Permanent itching, which increases under stress.
Erythema multiforme: 35-year-old female patient with Z.n. herpes simplex virus infection 4 weeks ago. multiple, acutely occurring, itchy, exanthema, existing for a few days. 0.2-0.7 cm large, sharply defined, firm, red, smooth papules and partly confluent plaques with partly cocardium-shaped aspect and central blister formation.
Acne vulgaris (overview): recurrent, multiple, disseminated standing retention cysts of 0.3-1.2 cm size on the back of a 38-year-old mansince adolescence; multiple black comedones (blackheads) are also present.
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