What role does IgG Unverträglichkeitstest play in Haut?

IgG intolerance tests are often marketed for skin issues like acne, eczema, or rosacea, but the scientific evidence is weak. IgG antibodies indicate immune exposure to foods, not necessarily intolerance or a causal role in skin symptoms. Studies claiming benefit are typically small, uncontrolled, or industry-funded. Major allergy and immunology societies (e.g., EAACI, DGAKI) advise against using IgG tests for food intolerance diagnosis. For skin conditions with possible food triggers (e.g., atopic dermatitis), a supervised elimination diet or IgE testing is more appropriate. Relying on IgG tests can lead to unnecessary dietary restrictions, nutritional deficiencies, and false reassurance. Therefore, the role of IgG intolerance testing in skin health is primarily marketing-driven and lacks robust clinical evidence. Consumers should consult a dermatologist or allergist for evidence-based assessment.