D has ezcema and his pedi told me that if it flares up, thats a sign of a food allergy for him. He often gets dry skin and ezcema spots just from being touched skin to skin too much (like if we play with him with only a diaper on. I use an aveeno ezcema lotion and that is good enough for him now. Some day I have to apply 3 times though.
When we discovered the banana allergy or potential allergy, this is what happened to his face. As soon as the dr saw the photo, he said hold bananas until after 1 yr because of allergy.
Does that look like your son at all?