I had it bad, and my mother did too. It flared up even worse with stress. Then a good friend of mine got it. He is a paramedic and is dogged with problems like this. He tracked it down to an allergic reaction to methylisothiazolinone in shampoo.
Hotel sheets would make my daughter’s eczema flare when we were on vacation. Now I have a “sleep sack” that I made for her out of a queen-size flat sheet folded over and sewn up the sides to be shaped like a sleeping bag.
I found organic virgin coconut oil and soap nuts (a fruit, not a nut, that grows on the soapberry tree). I boil the nuts to make a soap nut liquid for my son’s bath/shampoo/laundry. Since using these there has been a huge improvement in his skin!