Psoriasis – Wikipedia

Psoriasis is a long-lasting autoimmune disease characterized by patches of abnormal skin.[6] These skin patches are typically red, dry, itchy, and scaly.[3] On people with darker skin the patches may be purple in color.[9] Psoriasis varies in severity from small, localized patches to complete body coverage.[3] Injury to the skin can trigger psoriatic skin changes at that spot, which is known as…

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