naevus anaemicus: congenital, marginal irregularly dissected, white, smooth spots. no redness after rubbing the spot. on glass spatula pressure the borders to the surrounding area disappear. brown colored, intralesional melanocytic naevi (speaks against vitiligo!)
Ink spot lentigo: characteristic criteria are sharp demarcation, dark brown-black reticular lines (pigment network), which are interrupted in places within the lesion (dermatoscopic image)
Nevus, melanocytic, halo-nevus. multiple, chronically stationary, disseminated halo-nevi on the back of a 47-year-old man. the original melanocytic nevi but only shadowy recognizable.
Drug exanthema after taking a cephalosporin. 4 days after continuous intake of the antibiotic sudden (overnight) development of this moderately itchy, maculo-papular exanthema.
Notalgia paraesthetica. unspecific picture: Since 15 years persistent, palm-sized, recurrent in irregular intervals (several months), itchy or burning, blurredly limited hyperpigmentation at the right scapula of a 78-year-old female patient; slight scaling and xerosis cutis in the described area.
Striae cutis distensae, initially blue-reddish (Striae rubrae), later whitish, differently long and wide, jagged, parallel or diverging atrophic stripes with slightly sunken and thinned, transversely folded, smooth skin.
Interstitial granulomatous dermatitis with plaques. 10 months ago, erythematous plaques, initially europiece-sized, appeared for the first time, later on size progressive and confluent skin lesions on the left mamma in a 38-year-old female patient. In the lower outer as well as in the upper outer quadrant of the mamma discrete, bizarrely configured, reddish-brown plaques and multiple telangiectasias are visible.
Drug exanthema, maculo-papular. multiple, acutely occurring, generalized, very itchy, mainly on the trunk and extremities localized, mostly confluent, smooth papules and plaques in a 31-year-old woman. Occurrence after ingestion of acetylsalicylic acid.
Erythrodermic psoriasis: erythrodermia that has existed for several months in previously known psoriasis. universal redness with coarse lamellar scaling. the clinical picture of erythrodermia is not "diagnosis-defining". erythrodermia can occur as a maximal variant of several clinical pictures.
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