Allergic reactions to such foods as eggs, wheat, soy products, seeds, nuts and dairy products all potentially cause atopic eczema, particularly in infants, according to the National Eczema Association. Between one-third and two-thirds of all children and adolescents with atopic eczema also are allergic to some foods.
Eczema has other causes besides food. Extremely hot temperatures, extremes in humidity and sweat from exercise can all lead to eczema. Some fungi, viruses and bacteria also trigger outbreaks. Home allergens that can cause eczema include dandruff, molds, seasonal pollens, pets and dust mites. Stress has links to eczema that require more research for complete understanding, notes the National Eczema Association.