Arthritis, psoriatic. solitary or multiple, chronically dynamic, recurrent, salty arthritis, especially of the small finger joints with erythematous, severe swelling and pain (sausage fingers). joint infestation ?in the beam?. usually also typical psoriatic lesions at the predilection sites.
Acrocyanosis in right heart failure in age-related atrophic, shiny skin with solar lentigines on the back of the hand (DD: chronic Lyme disease - picture of acrodermatitis chronica atrophicans).
Chronic photo-aging of the skin: only moderately pronounced photo-aging of the skin; flat, regular base tan; slight signs of lentigia; numerous splashes of depigmentation.
Naevus depigmentosus: congenital harmless localized pigment disorder, no surface progression. characteristic is, in contrast to the naevus anaemicus, the "calm" smooth-edged border of the spot.
Amyloidosis systemic: flat light brown, symptomless spots and plaques on both backs of the hands; recurrent fresh bleeding in the case of banal trauma.
Dermatitis, phototoxic. detail enlargement: pronounced erythema on the fingers of the left hand. 2 x 1 cm measuring, flaccid bladder with clear content at the index.
Dermatomyositis. 72 year old patient with dermatomyositis known for 1 year. striped red, scaly papules and plaques over the base of the fingers. deep red, painful and slightly scaly plaques on the end phalanges, also directly periungual. distinct hyperkeratotic nail folds.
Acrocyanosis: Diffuse, reddish-livid skin discolouration at reduced temperature and doughy swelling; delayed filling of the vessel after anaemia by finger pressure (iris diaphragm phenomenon).
Lentigo solaris: multiple, disseminated, a few millimetres to 1.5 cm in size, oval, roundish or bizarrely configured, sharply defined, yellow-brown to dark brown spots on the back of the hand of a 75-year-old man (convertible driver).
Drug reaction, fixed. multiple, 2.0-12.0 cm large, round or oval, initially deep red, later brown-red, sharply defined, succulent, itchy or also slightly painful, red plaques.
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