I have Eczma, I've had it since I was 12, im 21 now. When I was younger I had it so bad I had it behind my knees, all up my arms, up my back, and horribly on my hands, to the point where it looked like someone ran a knife across my fingers. I go to a natural path doctor. I do have the steroid cream for it when it gets bad it clears it up, but ive found a few tricks....
tanning. for some reason everytime im in a tanning bed, my skin gets swollen while its exposed, but then later that day my itchin is less. and it clears up my rashes when I tan once a week for ten min. my doctor said it could be linked to a lack of Vitam D
Hydrogen peroxide, now I dont use the strong stuff cause it burns too bad and leaves my skin red all day, but I get 3% the spray, spray it on the area that itches, run my hands under ice water, and it stops the itching for awhile.
fake nails. I do the same thing as you, I rake my skin off in my sleep when I dont even know im doing it. So I get fake nails which I hate. but it keeps me from raking off my skin because acrylic nails are too thick to scrape your skin off, when I get fake nails my skin clears up while I have them.
also I got cotton gloves to wear to bed, i do it cause my eczema is on my hands,and legs, so it moisturizes my hands through the night and wakes me up if I try itching other places.
I hope that helps! out of all of them I strongly recommend getting the fake nails, it sucks, especially for me I play the violin and guitar and I cant play them with fake nails on. but it keeps you from peeling skin off at night