A recent EMJ Dermatology review shows that even without celiac disease or positive blood tests, non-celiac gluten sensitivity (NCGS) can still cause persistent skin issues like dermatitis herpetiformis, eczema, urticaria, psoriasis, and chronic rashes—symptoms that often improve after adopting a gluten-free diet.

A 2025 report in EMJ Dermatology highlights growing evidence that severe psoriasis is strongly linked to metabolic syndrome—a cluster of conditions like high blood pressure, high blood sugar, obesity, and unhealthy blood fats.