I have struggled with hand eczema off and on over the past 10 years. The last struggle I had with it has lasted for over four years now. The best advice I can give you is wear vinyl gloves for everything! Your shower, putting on make-up, cutting up veggies and meat etc. Doing dishes, cleaning the floor etc. etc. I slowly reintroduced certain tasks without gloves and came up with what I can and can't do without gloves.
Do not use hand creams and lotions, they are full of sugars and other ingredients that feed the fungus and/or bacteria causing the eczema. Look for natural products that do not have fragrance and other ingredients you can't pronounce. You can also try pure virgin coconut oil, straight on your hands it smells a little bit like tanning oil, but not over powering. I have also had good luck with petroleum jelly, but I know that this product has it's bad points. I had to decide for me whether I wanted hands I wasn't ashamed of and I chose to use the Vaseline Jelly before I found coconut oil and the only lotion I can use which is a diabetic cream I buy at Wal-Mart it is located in the diabetic supply section and has Diabetic right in the name of it, it is in a jar rather than a tube. It has many natural ingredients and it soothes my hands and doesn't appear to cause them to get worse like other lotions do.
Lastly and possibly most important, my Dad found an article in Dr. Donohue's (sp?) column in his local newspaper about eczema and Oolong tea, and so I have started drinking ice tea and I have actually seen the most improvement of all from this step, Praise God!!! Hand eczema is miserable and I sympathize with you completely to have it so badly must be a living nightmare.