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1680s, from medical Latin psoriasis, in Late Latin "mange, scurvy," from Greek psoriasis "being itchy," from psorian "to have the itch," from psora "itch, mange, scab," related to psen "to rub" (see psilo-). Related: Psoriatic.
psoriatic pso·ri·at·ic (sôr'ē-āt'ĭk) or pso·ri·a·sic (sə-rī'ə-sĭs)
Of, relating to, or characteristic of psoriasis.
psoriasis pso·ri·a·sis (sə-rī'ə-sĭs)
A noncontagious inflammatory skin disease characterized by recurring reddish patches covered with silvery scales.