Natural Treatments For PsoriasisPsoriasis is an autoimmune skin disease that causes scaling, skin redness and irritation. Psoriasis causes red, scaly patches that are generally found on the elbows, fingernails, scalp, palms, knees, face, feet and inside the mouth. Factors that can trigger psoriasis include infections, heavy alcohol consumption, cold weather, certain medications, smoking, stress and injury to the skin such...