Blister

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Blister

A blister (pronounced: /ˈblɪstər/) is a small pocket of body fluid (lymph, serum, plasma, blood, or pus) within the upper layers of the skin, typically caused by forceful rubbing (friction), burning, freezing, chemical exposure or infection.

Etymology

The term "blister" comes from the Middle English "blister" or "blæstre", which is probably from the Old Norse "blastr" or "blǽstri" (swelling, blister), from the Proto-Germanic "blēstrian" (to blow, swell), from Proto-Indo-European "bhle-" (to blow, swell).

Related Terms

  • Epidermis: The outermost layer of the skin where blisters form.
  • Dermis: The layer of skin beneath the epidermis. Blisters can extend into the dermis in severe cases.
  • Friction Blister: A blister caused by the skin repeatedly rubbing against another object.
  • Burn: An injury to the skin caused by heat, electricity, chemicals, light, radiation or friction, which can result in blister formation.
  • Frostbite: A condition that results from freezing of the skin and underlying tissues, which can lead to blister formation.
  • Bullae: A term used in medicine to describe a blister that is larger than 0.5 centimeters (5 millimeters) in diameter.
  • Vesicle (dermatology): A term used in dermatology to describe a small blister, as on the skin.
  • Pustule: A small blister or pimple on the skin containing pus.

External links

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