Leprosy lepromatosa: advanced findings with numerous, almost symmetrically distributed, asymptomatic papules and nodules, no accompanying inflammatory reaction.
Urticarial vasculitis. 33-year-old female patient with distinct reduction of the az. 3 weeks of recurrent febrile attacks (CRP and SPA massively increased) and a distinct feeling of illness accompanied by a maculo-papular, moderately itchy exanthema. Histological: Evidence of a leukocytoclastic "small vessel vasculitis". The clinical differentiation from urticaria is possible by marking a persistent efflorescence for several days (marking test). Recurrent and changing arthritis.
Malasseziafolliculitis:multiple, acutely occurring, dynamic, disseminated, follicle-bound, 0.2-0.6 cm large, inflammatory red papules and papulopustules on the back of a 53-year-old female patient. Severe seborrhea, following acne vulgaris in young adulthood; secondary findings include melanocytic naevi and isolated seborrheic keratoses.
verrucae plantares. sole of the foot in a 13-year-old competitive swimmer. painfulness during walking. lesions increasing since about 3 years. findings: aggregation, numerous, up to 2-4 mm large, clearly indurated horn crater with a slightly raised lateral horn wall (see left part of the picture). rough surface with whitish scaling. in some lesions approximately pinhead-sized, dark spot hemorrhages; see left part of the picture below.
Xanthomas, eruptive:disseminated, 0.1-0.3 cm large, yellow-brown, flat raised, superficially smooth and shiny, firm papules in dense seeding in a 54-year-old patient with known hyperlipoproteinemia type IV.
Lichen planus exanthematicus: an itchy exanthema that has existed for several months, with 0.1-0.2 cm large, slightly raised, disseminated, smooth, shiny, yellow-reddish, shiny papules.
Dermatitis, seborrhoeic: Multiple, chronically stationary, centrofacially localized (also on eyebrows and in the beard area), almost symmetrical, blurred, at times slightly itchy, red, rough, finely scaled spots and plaques on the face of a 32-year-old HIV-infected person.
common melanocytic nevus. type: nonfamilial syndrome of (acquired) dysplastic melanocytic nevi. up to 0.5 cm in size, brown, soft papules with smooth surface in disseminated distribution on the entire trunk in a 29-year-old patient. since earliest childhood strong sun exposure during regular bathing holidays at the north sea. the moles "have always been".
Naevus araneus: in the 43-year-old man there are isolated red spots, 0.1-0.2 cm in size, and red, smooth papules with a central arterial nodule and radiating capillary ectasia.
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