The last few months, what I describe as 'blisters' have been forming on my fingers. They appear suddenly and form over the length of a day. My skin puffs up as if it got burned, then gets all lumpy and slightly painful. Once formed, they don't seem to go away, they only get numb and slightly less puffy. The blisters have been spreading, they cover nearly half of my two pointer fingers now.

Nothing I've been doing would cause this. I don't do rough work with my hands. My skin is allergic to certain metals, but my skin only reacts if it has been touching the metal for a long time, and the rash goes away fast. I'm not using anything on my fingers, I haven't been touching anything unusual, and most of the blisters are on the backs of my fingers.

What could this be? My fingers are starting to turn gross, I don't want it to spread any more!