Your hand problem sounds like what's called dyshidrotic eczema. This is not usually associated with eczema anywhere else, so I'm not sure what the story is with your forehead--perhaps that's a mild irritation of some sort. Hydrocortisone 1% might help either condition, though you needn't bother with the palm rash unless it bothers you. If the problems persist, a skin doctor can prescribe a prescription-strength cream.
Take care.
Dr. Rockoff