DEAR DR. ROACH: An aged family member developed a large blood blister within an hour after a fall. It was measured to be approximately 10 by 10 centimeters and was 3 centimeters in height. My ...

Popping a blister can lead to infection and should be avoided, especially burn, eczema, or insect bite blisters. If you must pop a blister, sterilize a needle and clean the area with soap and water.

You usually do not need treatment for blisters, which often heal on their own. Make sure you wear properly fitted shoes and moisture-wicking socks to help prevent blisters. You should cover any ...