Protective Mechanism: With injury to our skin, inflammation occurs which means the area becomes red, warm, tender and with swelling. Swelling occurs under skin layers and causes bulging creating a protective fluid cushion we call a blister. As the area heals, the fluid is resorbed or when no longer needed, the blister opens and the fluid drains. This takes about a week. Simple bandaids are the tx popping causes injury.
Answered 4/22/2014
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