psoriasis -
a chronic skin disease characterized by dry red patches covered with scales; occurs especially on the scalp and ears and genitalia and the skin over bony prominences
psoriasis -
A noncontagious disease whose main symptom is gray or silvery flaky patches on the skin which are red and inflamed underneath when scratched.
Wikipedia
Psoriasis is a chronic, autoimmune disease that appears on the skin. It occurs when the immune system sends out faulty signals that speed up the growth cycle of skin cells. Psoriasis is not contagious.
OmegaWiki Dictionary
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psoriasis A disorder which affects the skin and joints. It commonly causes red scaly patches to appear on the skin.
