Pityriasis lichenoides chronica: 19-year-old, otherwise healthy patient with a papular exanthema which has been present for 1 year and runs intermittently.
Malasseziafolliculitis:disseminated, follicle-bound, itchy, inflammatory papules and papulopustules on the back of a 34-year-old female patient. skin lesions. no evidence of acne vulgaris. no formation of comedones
Scabies:explanatory presentation; chronic (existing for months) generalized, "eczematous", enormously itchy disease pattern with rough papules in the shape of a duct (here marked by black lines), encircling a chronically eczematized skin area without detectable duct structures.)
Pityriasis rubra pilaris (adult type) Detailed view: chronic recurrent course for years with phases of marked improvement and extensive recurrence (fig. in a thrust period).
Dermatosis, acute febrile neutrophils. following high fever at the décolleté and breast region of a 52-year-old man, acutely occurring, multiple, reddish-livid, succulent, pressure-dolent, infiltrated papules that aggregate to form nodules and plaques. isolated blister-like aspect.
Molluscum contagiosum: Detailed enlargement: disseminated, 0.1-0.7 cm in size, firm, coarse, waxy, broadly seated, smooth, red papules, which are centrally dented on closer examination; sometimes itching; psoriatic suberythroderma.
Angiokeratoma corporis diffusum, reflected light microscopy (focus in the navel region of a 41-year-old woman): Subepidermal, irregularly configured, finger-shaped branched red lacunae.
Tungiasis: Detail enlargement of the previous overview. densely standing, 1-5 mm large, partly roundish, but mostly stripy reddish-livid papules (duct structures; see right in the picture) which almost always show a small encrusted erosion at the edge (entry site of the fleas). In the center of the picture the efflorescences are overlaid by scaling.
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