Blisters occur when feet get hot & sweaty, making socks stick to the feet. The sock and foot then rub against each other and the inside of the shoe. Fluid fills up a space between layers of skin to protect the area, like a small balloon. That's how a blister forms. People with diabetes may not be able to recognize the painful event due to a condition called neuropathy, a doctor should attend to their blisters.
Sometimes these blisters "pop" by themselves and can become infected. Watch out for redness or leaking yellow liquid, and for red lines near the blister. These are symptoms that require medical attention. If the blister has not "popped," then leave it alone. Most of the time, it will reabsorb and heal on its own.
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