How are IgG and Haut related?

The claimed link between IgG food sensitivity tests and skin conditions like eczema or atopic dermatitis is not supported by evidence. IgG antibodies to foods are a normal physiological response to dietary exposure and do not indicate intolerance or allergy. Major allergy guidelines (EAACI, AAAAI, DGAKI) explicitly recommend against using IgG tests for diagnosing food-related skin issues. In children with eczema, such tests can lead to unnecessary dietary restrictions, nutritional deficiencies, and parental anxiety without clinical benefit. The 'IgG–skin' connection is largely a marketing construct, not a validated medical pathway. Evidence: practice (guidelines). Caveat: No proven utility; always consult a dermatologist or allergist before altering diet based on IgG results.