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A blister may be infected if it begins to get redder, becomes hot or swollen, and is increasingly painful. Be sure to go to a doctor if you suspect an infection, especially if you are a diabetic or someone with circulation problems.
You can avoid friction blisters on your feet by wearing the right shoes and socks.
A blister is usually infected if you see an increase in redness around the formation of the blister. Also, the liquid in the blister is normally clear. If it consists of an abnormal color or pus, it is probably infected. It is important to have a physician address an infected blister as this can turn into a more serious problem if not taken care of right away.
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