Popular Causes of Blisters

Blisters are small pockets of fluid within the upper layers of the skin. This can be caused by forceful rubbing (friction), burning, freezing, chemical exposure or infection. Most blisters are filled with a clear fluid called serum or plasma but, blisters can be filled with blood. This is known as blood blisters or with pus, if they become infected.

Blisters may form when the skin has been damaged by friction or rubbing, heat, cold or chemical exposure. Fluid collects between the epidermis, the upper layer of the skin and the layers below. This fluid acts like a protective pad, protecting the tissue underneath from further damage and allowing it to heal.

Friction or Rubbing

Intense rubbing of the can cause a blister filled with plasma. This kind of blister is most common after walking long distances or by wearing a new pair of shoesor shoes that does not fit correctly. Blisters are most common on extremities like the hands and feet as they are used for running, or performing repetitive motions. Blisters form more easily on moist skin than on dry or soaked skinand are more common in warm conditions

Extreme Temperatures

The time a blister take to form on the skin is one of the tools used to determine the degree of burns sustained. First and second degree burns may result in blistered skin; however, it is characteristic of second degree burns to blister immediately, whereas first degree burns can have blisters after a couple of days. Frostbite can also causeblisters on the hands and feet as a result of tissue damage due to exposure to extreme cold temperatures.

Chemical Exposure

Sometimes, the skin will blister when it comes into contact with a cosmetic, detergent, solvent or other chemical. This is known as contact dermatitis. Blisters can also develop as a result of an allergic reaction to an insect bite or sting. Some chemical warfare agents like mustard gas are known as blister agents

HealthLine.com is a popular resource that offers expert health advice from qualified professionals and experienced contributors. Find out more about blisters from Healthline.com

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