I keep getting small water bubbles on my sole. it only happen on 1 foot and the bubbles are usually in a cluster. they are rather painful but will just burst on their own n dry upin a few days. what could cause those plse? thanks!

Eczema: If these are very small and somewhat deep in the skin, this is dyshidrotic eczema which responds very well to potent topical steroids.

Acute athlete's foot: The first thing that comes to mind is that this is one of the presentations of acute athlete's foot. Use drying soaks (epsom salts or dilute vinegar) and a topical antifungal... I prefer patients use lotrimin ultra or Lamisil (terbinafine) cream. You can use certain-dry pads or solutions to decrease perspiration. If this doesn't work, see a podiatrist and be sure to inform them of what you have tried already.