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Plaque Psoriasis (aka psoriasis Vulgaris, Vulgar psoriasis, Nummular psoriasis) is the most common type of psoriasis, which accounts for about 80% of all cases.
Plaque Psoriasis signs are scattered inflamed red lesions, covered with a silvery-white buildup of scales (dead skin cells) and rising above the skin surface. Plaques have clear boundaries and rounded outlines. Fine scales shed frequently and are very dry and itchy.
Neighboring plaques frequently merge. Older plaques are darker, thicker, more inflated, and have a more pronounced boundary. Patches can cover extensive areas of skin.
Plaque Psoriasis is usually located on the elbows, knees, scalp, and trunk.
The sizes of lesions vary from several millimeters to the size of a palm or even larger.
The most frequent localization of the plaques is in the sections of a local trauma (Koebner phenomenon).
Lesions can spontaneously regress without leaving a trace after a lapse of the weeks, months or years.
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