Lichen simplex chronicus in dark skin. 0.1-0.2 cm large, marginally disseminated, firm brown-black (red shade is missing) papules, which have confluated into a flat plaque in the centre of the lesion. Permanent itching, which increases under stress.
Dyskeratosis follicularis (Darier's disease). acuteprovocation of the disease after light dermatitis solaris. no symptoms in areas not exposed to sunlight.
Amyloidosis macular cutaneous: Large, long-standing, continuously spreading, blurred, symmetrical, light to medium brown spots and plaques; histological evidence of the amyloid.
Dyskeratosis follicularis: General view: chronically dynamic, on the back localized, partly disseminated, but mostly flat arranged, dirty brown, flatly elevated, very itchy papules and plaques in a 43-year-old patient.
Naevus verrucosus unius lateralis: Multiple, chronically inpatient, since birth, clearly raised, large-area, running along the Blaschko lines, localized on the right side of the back, sharply defined, firm, symptom-free, greyish-brown, rough, wart-like plaques in a 16-year-old adolescent of Mediterranean ethnicity.
Larva migrans: after a tropical beach holiday several weeks ago, at times clearly itchy, in places still linear, but also flat, solid, scaly plaques; now healing after local therapy.
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