His eczema was pretty bad to be honest. At five months I started mix feeding doing about 4 breast feeds per day and 2 formula (the 2pm feed and the 10pm feed) and it was around this time I saw a slight improvement in his skin. We got a referal to a pead allergy specialist who we saw when he was 6 months and it was then they did the skin prick tests and RAST blood tests and we got the list of intolerances.
At this point I had not started weaning so all traces of the foods he was intolerant to he was getting via breastmilk which the specialist believed was causing the eczema. We came straight off Aptamil and tried Nutramigen but that made him sick and then went swiftly onto Neocate.
I gradually stopped the breast feeding and over a couple of weeks I saw a great improvement in the skin (I could have contolled my diet but we had a fairly hefty list!!). I then started weaning and have controled LO's diet accordingly and no flare ups so far. You could argue that he has grown out of the eczema but we have been back for further skin and blood tests and the results suggest the intolerances/allergies are still there. We don't know if we are dealing with true allergies as I have never given any of the offending items to eat directly.
We have had a few instant rashes around the mouth when he has come into close contact with egg and wheat things (either on my hands or picking up pita and nearly eating!)and we have given priiton but we have had no need for an epipen yet. Wheat and Egg gave very high results on the skin and RAST tests.
I has been hard cuting out so many things (diary, egg and wheat have been the hardest) but it can be done and MN has been a great source of info.
I hope this helps. For me stopping bf was OK as he was 6 months and that was kind of how long I wanted to carry of for, I am not sure what decision I would have made if he had been younger! Also, every situation is different but in our case there seems to be a clear a link between food and eczema.