Erythema multiforme: typical picture with different stages of development of the efflorescences: besides fresh 0.2-0.3 cm large flat papules, further developed large plaques with discrete cockade structure.
Bending atopic eczema: Skin lesions in a 20-year-old girl with intermittent course since the age of 4 years. Pollinosis (hazelnut, birch) known. In the area of the large joint bends accentuated, blurred, extensive, reddened, moderately itchy plaques. Skin field coarsened (lichenification).
scleroderma systemic: oedematous swelling of the hands and fingers. when stretching the fingers, white discoloration of the tense skin areas occurs. raynaud's syndrome, known for several years. reduced performance, increased sensitivity to cold, rheumatoid joint complaints, ANA:1:320; SCL70AK+.
Benzyl nicotinate: toxic reaction after application of the cosmetic "Lip Injection" on the forearm; erythema extending beyond the application site with lymphangitic reaction 10 min. after application of the product.
Cold urticaria. solitary, acute, on the right arm localized, approx. 5.0 x 7.0 cm measuring, flat, sharply defined, flatly elevated, skin-coloured, consistency increased, strongly itching wheals in a 20-year-old student. Comparable skin lesions were noticed on the whole integument during swimming. These disappeared after a few hours.
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