Hi,
This could be dyshidrotic eczema which presents as small blisters on the hands or feet. Fluid from the blisters is serum that accumulates between the irritated skin cells and not sweat as was previously thought. There are many treatments available for dyshidrosis, however, few of them have been developed specifically on the condition. Topical steroids, emollients, , salt soaks, avoidance of known triggers, nickel-free diets, stress management counseling and even light treatment.
It would be best to discuss which treatment option is best for you with your doctor. This link may be helpful: http://emedicine.com/derm/topic110.htm
Take care and keep us posted.
There is helpful information on geocities.com/dhr6878 which is a possibility of what you may have