Insect bite; superficial and deep, spot-like distributed, perivascularly oriented, predominantly lymphocytic infiltrate (mixed with a few eosinophilic granulocytes).
Dermatitis contact allergic: Chronic recurrent, massively itching, disseminated red papules and papulo vesicles confluent to blurred plaques. maceration of the 4th CRC. The skin lesions were caused by application of a cream containing gentamicin.
Collagenosis, reactive perforating. 12-month-old female patient: Red, solitary, partly confluent, itchy, coarse papules with hyperkeratotic clot on the right lower leg of an 80-year-old female patient.
Dermatosis acute febrile: large red, succulent, pressure-dolent, infiltrated, solitary and partly confluent plaques and papules on the lower leg in a 36-year-old female patient. 1 week before the onset of the disease a fever attack with temperatures > 38 °C occurred.
Scabies (overview): itchy "rash" all over the body, existing for weeks; see previous figure. findings: disseminated, red scaly papules, partly also linearly arranged. itching at night intensified in bed warmth
Dermatosis acute febrile neutrophils: acute, exanthematic clinical picture with affection of face, neck, trunk and extremities; here detailed picture of the lower leg with red, succulent papules and plaques.
Acroangiodermatitis. detail from the above figure. 0.2-0.4 cm large, initially isolated, then aggregated, deep red to reddish-livid papules develop from the smallest red (haemorrhagic) spots with a smooth surface, which finally confluent to form large plaques.
Angiokeratoma circumscriptum. localized vascular malformation with bizarre blue-black papular and nodular lesions. no symptoms. increasing prominence of the herd in recent years.
Lichen planus (classic type): moderately itchy, disseminated, like scattered distribution pattern, red-violet colour of the surface smooth, shiny papules and plaques.
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