Yes, I belive that all ezcema can likely be linked back to something ingested.
- Milk
-Dyes
-Chocolat/Peanut butter
-Gluten
- yeast
-Juice
An additive or preservitave.
The list can be endless.. Either, remove the questionable items from her diet so all symptoms go away. Then re-enter the food chain for one item at a time. I would wait a week, see if the ezcema comes back, if not that food might be okay try another one.
You can get testing done. It may or may not show up. I know somone is sure thier child is eating something that is causing his ezcema, but they can not figure it out.