What Causes Blisters?
Blisters are caused by several things:
Friction: Blisters can happen when something rubs against skin, such as a tool handle against the hand or a new pair of shoes against the ankle. Unlike corns and calluses, which develop from prolonged rubbing, friction blisters come from brief, intense rubbing on a small area.
Burns: Flames, steam, or touching a hot surface can cause blisters, as can severe sunburn or radiation.