Mastocytosis. type: Multiple mastocytomas Multiple, chronically stationary, approx. 0.6 x 0.7 cm large, localized on the entire integument, disseminated, round to oval, brown, smooth, little itchy spots and plaques in a 4-year-old boy.
Becker-Naevus: chronically stationary, planar, splatter-like light brown pigmented, rough, sharply defined stain; no change in pigmentation in the last 20 months compared to the previous findings
Dermatitis, phototoxic. general view (stage of healing): Strip-shaped, dark brown hyperpigmentations, partly with healing blisters and crusts, on the left forearm of a 30-year-old female patient. 2 weeks ago, after plant contact and subsequent UV exposure, suddenly appeared burning, painful, itchy blisters on reddened skin along the strip-shaped contact with the relevant plant parts.
Becker nevus: General view: Approx. 20 x 26 cm measuring, homogeneously pigmented, hairless, melanocytic, marginal spatter-like frayed pigmentation on the left upper arm/shoulder of a 14-year-old adolescent. The pigmentation had developed in childhood and had gradually grown over the entire shoulder and upper arm. Clear dark coloration after sun exposure. Incident light microscopy showed no evidence of malignancy.
Purpura anularis teleangiectodes: brown-red anular, also cocard-like (ring-in-ring structure) by confluence also serpiginous foci. no significant itching. sporadically also largely faded only shadowy spots.
Parapsoriasis en plaques, large: symptomless, well limited. disseminated stains and plaques. When the skin is wrinkled, a cigarette-paper-like pseudoatrophic architecture of the skin surface is visible (important diagnostic sign!).
Hyperpigmentation, caloric. 55-year-old female patient, who was treated for several months with heat applications because of back problems. At the heat contact points, partly anular, partly reticular, partly flat, dirty-brown hyperpigmentation can be seen.
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