Today, in a New York Times blog, I published a version of this:
One remedy does not work for all - that is the wisdom coming out of these letters. Seeing a good dermatologist and soothing your skin with some cortisone and/or other substance stands at the beginning.
Leave out gluten, dairy, nuts, nightshades (tomato, bell & hot pepper, eggplant, potato) - they are, in my experience, the worst offenders. But I have seen people react to spices, artificial colorings, preservatives, even to apples. Use nothing on your skin than virgin coconut oil, aloe vera gel (best directly from the plant), and your prescription ointment. Try to avoid make-up and read the labels of your shampoo and conditioner: Balm of Peru is only one ingredient that lets rashes bloom! Take a probiotic and vitamin D, and go out into the sun as often as possible - but never to the point of reddening or burning.
Then listen to your body - to the itch? What food makes you itch? What activity? Because every body is different, and my itch is not your itch. As soon as your itch gets better, avoid the cortisone cream, and go all coconut oil.
If your body itches consistently after a certain food, eliminate it - it is hurting you. Eczema is an inflammation of your skin (often on the basis of your gut being inflamed, too). And every bit of inflammation lowers the threshold for the itch, and a new allergy.
A lot of psychological theories are floating around – that certain personalities get it, that one gets it during stress, and so on. I think it is probably the inferior food we fall for in times of stress – comfort food that is loaded with sugars, white carbs and bad fats,. And when you have a chronic disease and an extremely itchy, disfiguring rash – yes, you might seem odd to so some people …
When you have healed, try to introduce some of the eliminated foods again - very, very cautiously. Some you might have to leave out forever, or may have them only very occasionally.
Go swimming in the ocean, whenever you can! - And my heart goes out to you poor thing!