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Psoriasis arthropathica L40.50
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Cold urticaria L50.21
Solitary, acute, flat, moderately sharply bordered, hardly elevated, skin-coloured, little increased in consistency, strongly itchy, flat wheals localized on the right arm.
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Phototoxic dermatitis L56.0
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Keratoacanthomas multiple eruptive D23.L
Multiple eruptive keratoacanthomas: different stages of development, starting with the smallest reddish surface-smooth papules.
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Kaposi's sarcoma epidemic C46.-
Kaposi's sarcoma epidemic:disseminated, bizarrely configured, spots and flat plaques, with a stripy pattern in places.
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Cold urticaria L50.21
Coldurticaria. cold provocation test: A cold pack was applied to the patient's forearm for 20 minutes and fixed with a gauze bandage. Only a few minutes after exposure to cold, the patient reported itching; when removing the pack, this flat wheal limited to the site of exposure was clinically evident.
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Calcinosis cutis (overview) L94.2
Calcinosis cutis: ulceration with a rock-hard, irregular base and reddened periulcerous surroundings; more frequent, e.g. in systemic scleroderma
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Scleroderma systemic M34.0
Scleroderma systemic: edematous swelling of the hands and fingers. when stretching the fingers, white discoloration of the tense skin areas (see right index finger) occurs. Raynaud's syndrome known for several years. increased sensitivity to cold, rheumatoid joint complaints, ANA:1:620; SCL70AK+.
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Linear IgA dermatosis L13.8
Dermatosis IgA-lineare: detailed picture with circulatory smaller and larger red blisters on urticarial background.
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Psoriasis vulgaris L40.00
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Porphyria cutanea tarda E80.1
Porphyria cutanea tarda: detailed picture; the variety of skin lesions can be reduced to certain features by careful analysis.
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Contact dermatitis allergic L23.0
Acute allergic contact dermatitis: 6 days ago, the first acute, itchy, blurred erythema on the left wrist with blistering after wearing a metal bracelet.

Acrodermatitis chronica atrophicans L90.4
Acrodermatitis chronica atrophicans: extensive, oedematous, tender red erythema as well as flaccid atrophy with cigarette-paper-like folding of the skin on the right hand of a 77-year-old woman. For 2 years there has also been joint pain in both hands and both shoulder joints as well as gait insecurity with proven neuroborreliosis. The fingernails are partly dystrophic (see stripy leukonychia) and partly no longer firmly connected to the nail bed.

Fasciitis necrotizing M72.6
Fasciitis, necrotizing. foudroyant running, primarily underestimated, highly painful clinical picture with high fever and massive swelling of the left hand. Patient with several years of immunosuppressive therapy.

Kyrle's disease L87.0
Hyperkeratosis follicularis et parafollicularis in cutem penetrans. solitary, brownish-red papules with central horny cone on the lower leg.
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Keratoacanthomas multiple eruptive D23.L
Multiple keratoakanthomas: multiple, reddish-brown, firm papules, up to 1,0 cm in size, with the characteristic picture of a keratoakanthoma (central corneal plug with surrounding epithelial lip formation); distinct itching.