Certain foods causing eczema?

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DD (2.5y) has eczema on her wrists, back of knees and where her leg joins her foots. DP reckons it's related to new clothes irritating her skin as that's what caused his but I'm not convinced. She scratches herself all over not just where the eczema is and often when she's half asleep.

Could a certain food be to blame? Not an allergy obviously but intolerance maybe or would this have to be accompanied by loose stools etc? I'm going to leave out peanut butter this week and see if that helps and then maybe milk or egg. But I don't know if there's any point and would welcome any other suggestions. She suffers from constipation too - could that be related?

With DS it was definitely dairy. Cut it out totally for a year or so and was able to gradually re-introduce it.

So yes it could well be food related. You need to cut it out completely for a few weeks to try.

I would start with dairy as it such a common allergen.

My eczema triggers are:
Some new clothing (esp bras!)
Changes in season (Warner due to central heating or hot weather)
Stress
(I'm 54)

My friends son's excema triggers are food. Not dairy. But sugars.
(He's 10)

Some areas to think about?
Best of luck

Thank you both.

Yes, DS had terrible itchy eczema. It was egg. Dairy caused him to look like he had teenage style acne, but the eczema didn't clear up completely until we cut out egg too.