There is a high correlation between eczema and food sensitivities.  If you have confirmed environmental allergies, this is even more likely.  The way to uncover food allergies is through testing or an elimination/ challenge diet.  ALCAT or Elisa blood testing for food allergies helps pinpoint these allergans, but generally these tests are available only through a practitioner.  You could eliminate wheat and /or other foods for 2-4 weeks, then add them one by one into your diet again, and look for reactions.  (other common food allergens are dairy, gluten grains, sugars, corn, soy, eggs, peanuts, food additives and dyes)  This is the most reliable way to find your allergies.  Since it's quite an involved process, I'd suggest you enlist the help of a naturopathic doctor or nutritionist.  If that's not possible, find a book that will guide you through it.  

Other supplements that are used for eczema are B vitamins, which are depleted by birth control pills, zinc, probiotics, and essential fatty acids.  Although you are taking supplements, you might not be taking enough of these or taking high-quality supplements that contain what they say they do.  Absorption is important to look at too, so if you have any digestive complaints, they should be addressed as well.  Often, these are due to food sensitivities so eliminating those foods improves GI symptoms as well.  Herbs that are commonly used include oregon grape root, red clover, burdock, dandelion, and licorice (internally) and calendula, chickweed (topically).  Homeopathics, chosen for individual symptoms, are often very effective, also.  Other areas to consider are stress management and sensitivity to toxic home/ body care products.  

Usually, treating one or more of these areas will result in significant or complete improvement, so it is well worth your time to try it.  Plus, there are many other benefits for improving overall health.  

Thanks for your question and good luck in your search.   

I could remember there was a moment in my life when i ate salad,i know that i am allergic to salads but i just tempted to eat it after seeing it prepared nicely by a friend of mine,greed made

me wanted to taste the salad and i did,guess what??after the next day i started having alot of eczemas on my face and it was so much and horrible and i looked ugly....i went to the hospital to complain about the sudden huge eczemas

appearing on my face and it was then my doctor told me it was caused by my food allergies....so yeah eczemas could occur when you eat a food which you are allergic to...

Eczema increases the risk of having a food allergy. If your child's scratchy skin comes into direct contact with a food allergen such as peanuts, it can easily enter the body and cause an immune system reaction.

Alleviating the symptoms of eczema can help prevent food allergies because healthy skin helps prevent food allergens from entering the body.

By cons allergy food do not usually cause eczema. Food allergies and eczema are two distinct problems. However, food allergies are more prevalent in children who also suffer from eczema than in others.