Psoriatic lesions

Patent Pending Psoriasis (/sɵˈraɪ.əsɨs/; from Greek ψωρίασις, meaning "itching condition" or "being itchy",[1] from psora "itch" and -sis "action, condition"; also termed psoriasis vulgaris),[2] is a common, chronic relapsing/remitting immune-mediated skin disease characterized by red, scaly patches, papules, and plaques, which usually itch.[2] The skin lesions seen in psoriasis may vary in severity from minor localized patches to complete body coverage.[2] The disease affects 2–4% of the general population.