Syphilis (early syphilis): macular, chronic exanthema. Fading erythema is also found in places. At this stage lymph node swelling is always detectable.
Transitory acantholytic dermatosis. 6-8 weeks of slowly progressive moderately pruritic, truncal exanthema in a 53-year-old man. Red, 2-5 mm large, flat papules confluent at the sternum to plaques of about 3 cm diameter.
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.
Malasseziafolliculitis: multiple, acute, disseminated, follicle-bound, 0.2-0.6 cm large, inflammatory, red papules and papulopustules; existing for months, immunosuppression.
Pityriasis lichenoides chronica: a clinical picture with multiple, inflammatory, scaly, excoriated papules that has been present for months and is accompanied by considerable itching; cause unknown.
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.
verruca seborrhoica: multiple verrucae seborrhoicae. continuous development since the 4th decade of life. findings: densely standing, 0.2-1.0 cm large, yellowish also brownish flat papules. individual seborrhoeic keratoses itch repeatedly. no clinically detectable inflammatory symptoms.
Drug exanthema, maculo-papular. multiple, acutely occurring, generalized, very itchy, mainly on the trunk and extremities localized, mostly confluent, smooth papules and plaques in a 31-year-old woman. Occurrence after ingestion of acetylsalicylic acid.
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.
Syringome disseminated: detailed view; since about 2 years, imperceptibly multiplying, disseminated, completely asymptomatic, surface smooth, small brownish nodules, which are only perceived as cosmetically disturbing. distribution: trunk and face.
Varicella: generalized, but only moderately pronounced (no feeling of illness) exanthema with a coexistence of vesicles, papules, papulopustules in a 24-year-old female patient.
Dyskeratosis follicularis. partly loosely disseminated, partly grouped standing, partly aggregated (sternal region), brown-red papules and plaques in a 52-year-old female patient who suffered from "eczematous" changes in the seborrhoeic zones since early childhood. distinct itching, increased body odour. a worsening of the disease over several weeks led to this skin condition, with evidence of Candida spp. and Staph. aureus in smears.
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