Syringome disseminated: 78-year-old male patient. the brownish-red subjectively completely asymptomatic papules; they would have existed "forever". spreading flat only on the right forearm on the inside. the diagnosis was confirmed bioptically.
Papillomatosis cutis lymphostatica: massive findings with papillomatous growths on the back of the foot and toes; chronic lymphedema after recurrent erysipelas.
Acromegaly: 43-year-old patient with known acromegaly. Noticeable increase in size of the lower extremities. Simultaneous development of excessive varicosis with consecutive chronic venous insufficiency (CVI).
Differential diagnosis of Prurigo nodularis: Lichen planus verrucosus: Isolated and aggregated, massively itchy, scratched papules and nodules in the area of the lower leg (resistance to therapy; progression over years).
Usual melanocytic nevus. Chronic stationary, 0.2-2.0 cm in size, sharply defined, soft, light to dark brown, indolent, smooth papules and plaques in the breast area of a 22-year-old woman. No increase in pigmentation or size is noticeable.
Argyrie: diffuse, grey to greyish-blackish, metallically shiny, diffuse discolouration of the facial skin due to deposition of silver complexes The patient worked for decades in a silver-processing company
Granuloma anulare disseminatum: partial manifestation. non-painful, non-itching, disseminated, large-area plaques that appeared on the trunk and extremities of a 65-year-old patient. no diabetes mellitus. no other systemic diseases known.
Becker-Naevus: Since birth existing, extensive hyperpigmentation in the area of the right hip in a 7-year-old boy; typical for the Becker-Naevus is the bizarre bordering as well as the follicular accentuation in the pigment zones.
Multiple seborrhoeic keratoses in different stages of development. 2.0 cm in diameter in the centre, dark brown seborrhoeic keratosis. Characteristic is the punched surface.
Urticaria pigmentosa:multiple, chronically stationary, known for 1 year, no longer increasing for 3 months, mainly localised on the trunk, 0.2-0.4 cm in size, blurred, red to reddish-brownish, smooth spots. no spontaneous itching. after warm bathing, the spots are bright red, eleated and itchy (wheals). lively redness and wheals appear even after mechanical irritation.
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