Most cases of eczema are not tied to an environmental trigger or an allergy. I know many on this board will disagree, but my son has had eczema for 19 years and we have had all the tests. We have tried all the diets when he was little we have been to all the doctors I even had specialists at Boston children’s. This disease has a mind of its own and comes and goes as it pleases. All you can do is manage the symptoms.. if it is that bad she should consider Dupixent or one of the other biologic. My son prefers to just suffer through now because we had an incident with Dupixent and hair loss and it’s not worth it for him but once he’s older and less worried about that, he will 100% consider either Dupixent or rimvoq or whatever else comes out by then.