Blisters are small swelling of the skin containing watery fluid caused by friction. The body responds to the friction by producing fluid which builds up beneath the part of the skin being rubbed, causing pressure and pain.
Blisters are a common problem with athletes wearing in new shoes. They are also a common problem for athletes, runners and walkers who participate in exceptionally long events such as marathons or long hill walks. To help avoid or lessen blisters, use petroleum jelly or baby powder applied before long walks.
After a blister develops keep it clean and dry. If the blister has not “popped,” leave it alone. Most of the time, the blister will reabsorb and heal on its own.
If a blister is red, leaking yellow fluid or has red lines near the blister, visit a doctor immediately. Redness and leaking yellow fluid are symptoms of infection.