Dietary Approach to Mild-to-moderate Psoriasis

Inclusion criteria of psoriasis patients * age \>18 and \<65 years; * no systemic therapy for psoriasis for at least 3 months before inclusion in the study; * negativity of anti-deamidated gliadin protein (anti-DGP) immunoglobulins (Ig) class A (IgA) and immunoglobulins (Ig)G, anti-tissue transglutaminase (anti-tTG) class IgA and IgG, and Endomysium antibodies (EmA); * absence of WA (negative prick-test and/or specific serum immunoglobulins (Ig)E assay for wheat, gluten, and gliadin). Exclusion criteria of psoriasis patients age \<18 and \>65 years; * severe chronic plaque-type psoriasis (based on BSA); * self-exclusion of gluten/wheat from the diet and refusal to reintroduce it, for diagnostic purposes, before entering the study; * pregnancy; * alcohol and/or drug abuse; * Helicobacter pylori and other bacterial and/or parasitic infections; * diagnosis of chronic inflammatory bowel disease and other organic pathology affecting the digestive system (e.g., severe liver disease), nervous system diseases, major psychiatric disorders, immunological deficits, and impairments that limit physical activity; * diagnosis of cancer * treatment with steroids and/or immunological therapies; * patients undergoing chemotherapy and/or radiotherapy.