Pityriasis rosea. trunk exanthema, arranged in the skin tension lines (see drawn line system).
pityriasis rosea. exanthema occurring within a few days, intermittently intermittent with disseminated scaly red nodules and plaques. minor itching. the first focal point "plaque mère" is a larger focal point on the left lower abdomen.
pityriasis rosea. exanthema occurred within a few days. course in the skin tension lines (drawn here). marked "plaque mère" in the square.
Pityriasis rosea. close-up: Disseminated, up to 2.0 cm large, in places strongly scaling papules and plaques; arrangement in the skin cleft lines.
Pityriasis rosea: Collerette scaling: For Pityriasis rosea pathognomonic form of scaling with exactly one ring of fine, slightly raised, whitish scaling about 1-2mm indented from the lateral edge of the reddish plaque.
Note: this form of "keratolytic" desquamation results from the repulsion of superficial, parakeratotic horn lamellae.
Pityriasis rosea: typical exanthema of bright red papules and flat plaques on the trunk and proximal extremities, some with typical Collerette scaling. there is little itching. duration of existence at first presentation 2 weeks. pat male, 29 yrs.
Pityriasis rosea in dark skin. A few weeks old, slightly itchy, bran-like scaly exanthema in a young Ethiopian patient. Noticeable is the accentuated brighter border of the plaques.
Pityriasis rosea in dark skin. A few weeks old, slightly itchy, bran-like scaly exanthema in a young Ethiopian patient. Noticeable is the accentuated brighter border of the plaques.
Pityriasis rosea: A maculo-papular to plaque-like, slightly to moderately scaly exanthema with coin-like filled foci that persists for a few weeks; in the breast area also large, anular formations.
Pityriasis rosea: clearly visible primary medallion in the right axilla. the red colour typical of the flock in white skin is completely absent in dark skin.
Pityriasis rosea: distinct acanthosis, focal spongiosis and parakeratosis; bulky, perivascular and interstitial round cell epidermotropic infiltrate in the upper dermis.
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