Blue nevus: Solitary, blue-black, sharply defined, indolent, coarse knot with a smooth, shiny surface in the area of the capillitium in a 9-year-old boy.
sebaceous nevus: bizarrely configured, sharply bordered to the healthy skin, asymptomatic, hairless, relatively soft, verrucous plaque on the capillitium of a 28-year-old man. Before puberty only a hairless reddish-brown spot is noticeable. For several months development of brownish verrucous parts as well as two reddish papillomatous tumors (see upper parts of the nevus). Histological diagnosis of the proximal tumor: basal cell carcinoma.
sebaceous nevus: Development of different tumor formations in a sebaceous nevus in a 45-year-old patient. In addition to a skin-colored, very rough area with a large basal cell carcinoma, formation of a solid hidradenoma (pigmented tumor on the lower left side). For therapy, the entire hamartoma was excised with a safety margin of 0.5 cm.
Naevus sebaceus: Hairless spot (plaque) existing since birth in the capillitium of a 4-year-old boy with progressive yellow coloration and increasing thickness growth in the last months.
Naevus sebaceus:Hairless, completely symptomless, verrucous plaque in the capillitium of a 25-year-old man, existingsincebirth; in recent years progressive verrucous growth.
Sebaceous nevus: clinical aspect of a sebaceous nevus in a few-month-old infant; only the slight plaque-like elevation of the hairless area indicates the actual diagnosis.
Ostiofolliculitis. reflected light microscopy: neck area of a 46-year-old woman. Non-confluent, follicle-bound, targetoid, whitish-yellowish round foci (pustules) with central, brownish horn plugs as well as inflammatory surrounding redness with ectatic point vessels.
Pediculosis capitis: Numerous nits, recognizable as white spots on the hair shaft, in a 7-year-old girl. Several schoolmates are also affected. Painful lymphadenitis in the occipital region due to scratching effects with subsequent eczematization (lice eczema; not visible here) and impetiginization.
Psoriasis capitis: chronically inpatient, intermittently worsening red spot on the forehead, localized on the forehead, extending into the hairy area, sharply defined, large red spot on the forehead. more severe scaling in the area of the capillitium. currently pre-treated with a triamcinolone acetonide ointment. more red plaques on the elbows.
Psoriasis capitis. solitary, chronically stationary, sharply defined, silvery scaly plaque that extends beyond the hairline. infestation of predilection sites on the rest of the body
Psoriasis vulgaris. p soriasis of the scalp (untreated condition). Chronic stationary, disseminated, silvery scaling, large-area, adherent plaques of a previously skin-healthy 6-year-old boy, localized at the capillitium. Remark: In contrast to seborrhoeic eczema of the scalp, psoriasis exceeds the line of the hairline.
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