
Hypertrophic Lichen planus L43.81
Lichen planus verrucosus. 1 year old, constantly itchy, blurred, firm plaque with a wart-like surface structure. The clinical findings are to be distinguished from those of a Lichen simplex chronicus (Vidal ).

Swimming pool granuloma A31.1
Swimming pool granuloma, detail magnification: 2 cm diameter, red-livid, discretely scaling node at the base joint of the left index finger of a 60-year-old aquarium owner.

Granuloma anulare erythematous L92.0
Granuloma of anular erythematous type. Red-brown plaque with little induration and marked central atrophy. Slow centrifugal growth lasting for months.

Back of the hand edema, chronic traumatic R60.0

Asymmetrical nevus flammeus Q82.5
Naevus flammeus lateralis. congenital, generalized, spotty erythema on the left arm in an 18-month-old boy with age-appropriate development.

Dermatitis medusica L24.8
Dermatitis medusica: A few minutes after the contact event, representation of linear, strongly consistency-multiplied, flat-exposed plaque with scab and vesicle formation (illustration was kindly provided by Dr. Heike Luther/Essen).

Granulomatous slack skin
Poikilodermatic mycosis fuungoides (plaque-type): conspicuous lesional atrophy, which comes close to the clinical aspect of "granulomatous slack skin".

Artifacts L98.1

Cutaneous t-cell lymphomas C84.8
Lymphoma, cutaneous T-cell lymphoma. type: Large-cell, CD30 negative T-cell lymphoma. 6-month-old, 3.5 cm in diameter, large, centrally focal ulcerated, coarse-elastic, symptomless lump with shiny (atrophic) surface in a 53-year-old woman.

Angiokeratoma circumscriptum D23.L
Angiokeratoma circumscriptum, large confluent angiokeratomas in the area of the foot with cavernous transformation.

Acrodermatitis chronica atrophicans L90.4
Acrodermatitis chronica atrophicans: Livid erythema on the back of the right hand and nail dystrophies in a 78-year-old female patient with confirmed neuroborreliosis 6 years ago. Cushion-like (pernion-like) plaques on the fingers. Persistent pain in the carpal and interphalangeal joints.

Infant haemangioma (overview) D18.01

Pyoderma gangraenosum L88
Pyoderma gangraenosum with multiple foci: Known, long-term immunosuppressive basic disease.