I feel your pain. I work as a Surgical Technologist. I have a similar problem. I like Aveda Hand Relief. It is a little on the expensive side, but it doesn't take much, is not heavily perfumed, not greasy and does not wash of completely the first time your hands get wet. I have a problem with palmar eczema in the winter months and this is the only thing that has helped. In fact, for the past two winters, I have had minimal break outs.
If your hands are really dry and cracked, get you some petroleum jelly (Vaseline makes a 'cream' Vaseline petroleum jelly) and put it on at bedtime with a pair of gloves. If you don't want to sleep in the gloves, put the Vaseline on with the gloves and somehow warm your hands. (I call this the poor mans hot wax treatment) It really works great.
Good luck with those hands.