
Contact dermatitis allergic L23.0
Contact dermatitis allergic: large, blurred (scattered edges), itchy, red, rough, sometimes weeping, scaly plaque that has existed for several weeks.

Koebner phenomenon L40.9; L43.9
Koebner phenomenon. isomorphic irritant effect in psoriasis vulgaris. striped plaques and linearly arranged psoriatic papules that have formed in scratch marks.

Porphyria cutanea tarda E80.1
Porphyria cutanea tarda, scaly and crusty changes on the back of the hand and forearm, extensive ulcerations, occasional blistering.

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, and when removing the pack, this flat urtica was clinically evident.

Contact dermatitis toxic L24.-
Contact dermatitis, toxic: redness, swelling, scaling, erosions, rhagades, itching and burning in a 52-year-old patient, mainly occupational disease.

Psoriasis (Übersicht) L40.-
Psoriasis of the hands: here partial manifestation in the context of generalized psoriasis.

Netherton syndrome Q80.9
Netherton syndrome: clinical picture already manifested in childhood, here picture of "atopic hand eczema".

Pemphigoid gestationis O26.4
Pemphigoid gestationis: Large, partly sharply defined and partly blurred, bright red plaques with central flat blisters.

Lichen planus classic type L43.-
Lichen planus (classic type): for several weeks persistent, red, itchy, polygonal, partially confluent, red, smooth, shiny papules.

Prurigo simplex subacuta L28.2
Prurigo simplex subacuta:0.3-0.4 cm large, red, centrally eroded or ulcerated, moderately sharply defined, interval-like, violently itching papules, which are shown in the present image detail in different stages of development.

Purpura pigmentosa progressive L81.7
Purpura pigmentosa progressiva: aetiologically unexplained (medication?) pronounced clinical picture that has been changing for several months with symmetrically distributed, disseminated, non-itching, yellow-brown, spots (detailed picture).

Dermatomyositis (overview) M33.-
Dermatomyositis. Gottron papules in a 72-year-old woman. Smaller, striated, reddish-livid papules appear, which confluent in the region of the end phalanges to form flat plaques. Strongly pronounced nail fold capillaries on dig. III and V. The Keining sign was strongly positive in the clinical examination.

Unilateral naevoid telangiectasia syndrome I78.8
Teleangiectasia syndrome, naevoides; for about 20 years existing, blurred redness of finest telangiectasia on the forearm of a 66-year-old woman.

Pregnancy dermatosis polymorphic O26.4
PEP: Fuzzy, confluent, urticarial papules and plaques on arm and trunk in the last trimester.

Lichen planus classic type L43.-
Lichen planus. large-area lichen planus formed by aggregation of small papules (see upper edge of the large plaque in the middle of the picture). distinct lichenification; only moderate passagonal itching. wickham's pattern is recognizable.

Linear IgA dermatosis L13.8
Dermatosis IgA-lineare: Circinarily arranged, smaller and larger, red blisters on a urticarial base.