Prurigo nodularis. chronically active disease pattern, increasing since 5 years. generalized, disseminated, 0.4-2.0 cm large, very itchy, flatly raised or hemispherically raised, rough, red plaques and nodules. numerous excoriations (scratch artifacts). neck, hands and feet are not affected.
Finger knuckle pads, real. brown-red, painless, rough plaques, dorsally located in the area of the interphalangeal joints of the hand, slowly growing over years, no spontaneous regression.
Acne, keloid acne. stringy, coarse, brownish pigmented elevations in the chest area in a 24-year-old female patient on healed acne vulgaris. Medical history and clinic are pathognomonic.
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.
Melanosis neurocutanea. general view: Huge melanocytic nevus occupying nearly the whole back with single, dark-black pigmented, partly exophytic-papillomatous parts; on the left back flat, soft, skin-coloured tumours (dewlaps) and some neurofibromas are visible.
type i neurofibromatosis, peripheral type or classic cutaneous form. numerous deep-seated soft papules and nodules. multiple smaller and larger café-au-lait spots.
chloasma/melasma. blurred, partly flat, partly also net-like or splatter-like yellow-brown spots. clear increase of pigmentation differences in spring. decrease, but not complete disappearance in winter
Candida granuloma: Recurrence at the forearm extensor side in a 28-year-old patient 1 year after complete regression of the granulomas under antifungal systemic therapy.
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