Bowen's disease: chronically stationary, slowly increasing in area and thickness, sharply defined, now clearly (knot formation), symptom-free, red, rough, sometimes scaly and crusty plaque on the palm of the hand.
Graft-versus-Host-Disease: chronic. 1.5 years after stem cell transplantation, large-area, scleroderma skin changes. significant increase of the poikiloderma skin areas in the exposed zones. significant reduction of the AZ
Onycholysis, drug-induced or light-induced. Incident light microscopy: Yellowish-brownish discoloration of the right big toe nail after tetracycline therapy and sunbathing in a 54-year-old man. The nail matrix appears partially disintegrated in a cloggy manner. Clinical signs: Detachment of almost all fingernails as well as yellow-brownish discoloration and subtle lifting of the nail bed.
Keratosis palmoplantaris diffusa circumscripta: Thick, waxy, yellowish, plate-like horny layer that covers the entire palm of the hand and also the sole of the foot; the mobility of the hands is restricted.
Xanthogranulom juveniles (sensu strictu). solitary, softly elastic, yellowish, completely painless plaque, composed of surface smooth papules about 01.-0.3 cm in size. 6-month-old female infant. size growth in the first months of life.
Eczema, hyperkeratotic rhagadiform eczema of the hands and feet. 3-year-old man: 3-year-old man with a chronic recurrent, blurred, flat, yellowish-brown, rough, strong, scaly plaques on the left hand of a 21-year-old man; several small, painful rhagades and smaller artifactual excoriations are visible.
Onycholysis drug-induced or light-induced: Oyncholysis marked by arrow. Known Porphyrias cutanea tarda. Onycholysis without any trauma occurred (no subungual bleeding at the proximal onycholysis margin detectable).
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