In many cases, children with eczema don’t need to avoid specific foods. But roughly 30% of children with eczemaTrusted Source  also have food allergies. Allergic reactions to foods may cause itchy skin or other symptoms that can trigger an eczema flare. If your child develops symptoms after eating certain foods, let their doctor know. They can refer your child to an allergist for testing and treatment. If they receive a diagnosis of food allergy, their allergist can help them learn how to prevent allergic reactions by avoiding food allergens in snacks and meals. Non-allergic food sensitivities might also cause symptoms in some children.