I used to suffer from eczema, but I am bit on the stubborn side, so at one point I got fed up with one dermatologists after the other over the years essentially telling me “it is chronic, here’s your steroid lotion and light treatment, try to learn to live it”.
So around 2003-2004 I finally found a somewhat “alternative” dermatologist, in the sense that she was open for other treatments than steroid cremes or pills. She took a blood sample and concluded I had candida overgrowth. The best way to get rid of this is to starve it, and since it lives off of carbohydrates, this meant cutting out flour, sugar, rice, processed foods, etc. from my diet, and upping vegetables and healthy fats, which essentially got me started on a Low Carb High Fat diet (LCHF). At first my skin didn’t improve, but I noticed I could now go for REALLY long bike rides, without sugar crashing with cold sweats and immense hunger. Before starting on LCHF, I absolutely had to bring bananas and chocolate with me, for emergency sugar crash situations. So clearly, the new diet stabilized my blood sugar levels, from roller coasting, to a steady state.
Over the years I have added many more body hacks, like fermenting and eating kimchi, to repopulate my gut microbiome. I was given a lot of penicillin in my youth, which might possibly have altered the balance of my gut bacteria.
Over the years my skin got better and better – first the skin behind my knees went from dry and itchy to normal, then my fingers got better one by one, until finally about two years ago, the last little patch of itchy, red, dry skin on my little finger disappeared.
I believe these adjustments in my diet have also helped improve my mood as a by-product, I feel calmer now, though it is hard to tell if it is just a result of getting older 
Not scratching your dry skin all night long will of course in itself improve your well being, due to better sleep.
