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.
Pseudo-pelade: irregularlylimited, hairless area. follicular structure in the hairless area is completely absent. it is thus in a "scarred" final state of a previously expired inflammation leading to scarring.
Folliculitis decalvans. 24 months of persistent scarring hair loss, with initially slight itching. In addition to purulent folliculitis, there are also incised tufts of hair with surrounding erythema and numerous small, shiny, hairless areas.
Folliculitis decalvans. 3 years of persistent scarring hair loss, with initially slight itching. In addition to purulent folliculitis, there are also incised tufts of hair with surrounding erythema and reflecting hairless areas.
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.
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.
folliculitis decalvans. low inflammatory, "burnt out" disease state. appearance of scarred alopecia with discrete, heart-shaped reddening around the marginal hair follicles. the present condition approaches the finding of "pseudopelade brocq".
Alopecia postmenopausal, frontal, fibrosing: uniform receding of the frontal and temporal hairline. moderately pronounced ulerythema ophryogenes. keratosis follicularis on the extensor extremities.
Alopecia areata. roundish, centrifugally and medially spreading, smooth, hairless area with preserved follicles. in the active marginal area hair can be pulled out in bundles. under internal steroid treatment with methylprednisolone for 4 weeks, hair re-growth occurred in places.
Trichotillomania; for 2 years in a 9-year-old boy a circumscribed, flat alopecia of varying extent; due to incomplete and frequent pulling out of the hairs single tufts of hairs have stopped again and again.
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