My husband has these tiny blisters that appear on the inside of his hands and fingers they just over a pin head size and have clear fluid in it. his hands are very sensitive and it's sore what could be the cause. it happened in nov and now again?

Hard to guess...: Hands and fingers eczema sometimes appears as itchy little blisters. In some people, the blisters are actually little firm bumps, but they do itch. We call that dyshidrosis or dyshidrotic eczema. Because rashes are difficult to describe in words, and even harder to visualize from words, his primary care doctor or a dermatologist can look at the blisters to help decide what they are.