Melanoma, malignant, amelanotic. sharply defined, largely amelanotic flat knot. on the right side still distinct melanotic pigmentation. also at the upper rim delicate pigmentation.
Psoriasis pustulosa generalisata: severe clinical picture with fever, arthralgias and considerable disturbance of the general condition; generalized large-area, confluent erythema and plaques with pustules, the shear rate of which is already declining; coarse lamellar, "corneolytic", fatty, scaling (explanation: only the uppermost epidermal layers with the stratum corneum come loose, so that the scale consists only of an extremely thin, translucent, tearable foil; this type of foil-like honing layer detachment is also found in scarlet fever - also called "scarlatiniform scaling").
Mastocytoma kutanes: 1.0 x 2.0 cm, yellow-brown, flat, crescent-shaped, raised lump with blurred edges, protruding in the first two months of life; normal surface relief above the lump.
Cutaneous endometriosis: For several years slowly growing, surface-smooth, 2.0 cm large, bulging elastic dark red lump; cyclical premenstrual feeling of tension with distinct pain.
Atheroma Solitary, chronically stationary, sharply defined, approx. 3.0 x 1.5 cm, bulging elastic, largely hairless tumor in the area of the capillitium; no detectable central porus.
eczema, photoallergic. 51-year-old female patient. generalized skin disease with 0.2-0.4 cm large, red, slightly scaly papules (see lower margin of the picture), which have merged into flat plaques on the exposed skin areas. sudden spread. appearance within a few weeks after infection, intake of antibiotics as well as later exposure to sunlight.
dermatomyositis: reflected light microscopy. hyperkeratotic nail folds. pathologically enlarged and torqued capillaries. older bleeding into the nail fold.
Herpes simplex virus infection: Solitary or grouped standing, 1-3 mm large, formerly tightened, but now burst vesicles on erythematous skin on the scrotum and penis of an 8-month-old, otherwise healthy infant.
Lupus erythematosus systemic (late onset) characteristic "collagenosis hands" with persistent, acaral accentuated livid-red plaques, hypercratic nail fold and small hemorrhages. 83-year-old patient with known (since several years proven) systemic lupus erythematosus.
DRESS: 4 weeks after taking carbemazepine, appearance of this generalized maculo-papular exanthema. onset in the face with spreading to the whole body. marked itching.
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