For my dd it was food and environmental. She would scream in itching bleeding flare up agony from milk, soy, cats and dogs. But it was still tough to get it to go away. I had some success with probiotics and homeopathic tablets specifically for eczema, but not enough. I tried lots of natural HFS lotions and creams. It also helped a bit to bathe her and immediately massage her whole body with a gentle cream to seal in the moisture. I wanted to be able to clothe her in organic or natural non-fire retardant treated clothes, but didn't have the $. Finally when she was 4 we moved to a new house and her eczema cleared up very fast. I couldn't figure it out until I noticed our toilet and sinks turning orange and her skin also broke out in eczema again. We needed to add more salt to the water softener. The light went on- it was the water softener that cleared her skin up the rest of the way instantly. She's 6 now and has really grown out of a lot of her sensitivities, or has a much higher tolerance to them. She has dairy and soy in moderation and we have cats and a dog (outdoor) and she has no problems.