Keratosis areolae mammae naeviformis: Chronically inpatient, for years unchanged, limited to nipple and areola, moderately consistent, symptomless, brown, rough (warty) plaque in a 45-year-old man.
Psoriasis palmaris et plantaris (plaque-type chronic inpatient plaquepsoriasis of the sole of the foot with coarse desquamation and painful hare formation. no topical pre-treatment
Psoriasis vulgaris. general view: multiple, solitary or confluent, nummular or large-area, erythrosquamous plaques on the buttocks of a 49-year-old woman with psoriasis vulgaris existing since adolescence. the skin lesions continue into the rima ani.
Dyskeratosis follicularis. chronic dynamic, partly loosely disseminated, partly grouped standing, partly aggregated to plaques, brown papules first manifested in childhood. distinct itching with excoriations on the skin lesions.
Granuloma anulare erythematous type. little indurated, marginal reddish-brown plaque with indicated central atrophy. slow centrifugal growth lasting for months. Granulomatosis disciformis chronica et progressiva is to be considered as a differential diagnosis (entity).
lupus erythematodes chronicus discoides: 35-year-old otherwise healthy patient. skin lesions since 12 months, gradually increasing, no photosensitivity. multiple, chronically stationary, touch-sensitive, red, plaques with central adherent scaling. histology and DIF are typical for erythematodes. ANA and ENA were negative.
Lichen planus actinus: polygonally limited, hardly itchy Lichen planus; the violet shade of the Lichen (ruber) planus can be found in the marginal area of the plaque.
Nummular Dermatitis: General view: For 3 years persistent, itchy, eroded, excoriated, partly encrusted, coin-shaped plaques on the left lower leg of a 64-year-old female patient.
Squamous cell carcinoma of the skin: large, painless plaque with a sharply defined proximal border, with extensive horny and crusty deposits; the finding has existed for several years.
Xanthogranuloma juveniles (sensu strictu). soft elastic, yellowish, completely asymptomatic, hardly elevated plaques. no Darier's sign! 10-month-old female infant with multiple xanthogranulomas. size growth in the first months of life.
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