What is Psoriasis | Symptoms | Treatments | Causes | Pictures | Types Psoriasis is a chronic skin disorder that is marked by patches of intensely itchy and flaky skin that doesn't go away with regular moisturizers the way most ordinary dry skin will. It can affect any part of the body, even the scalp and nails, and can be mild, moderate or severe. Health Mayo clinic what is psoriasis | symptoms | treatments | causes | pictures | types The National Psoriasis Foundation (NPF) is a
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