The Hair Loss Encyclopedia
fluid-filled sacs on skin from friction, burns, or infections
Blisters, also known as vesicles or bullae depending on their size, are fluid-filled sacs that form on the skin due to friction, burns, infections, or other causes. They act as a protective barrier, allowing the underlying tissue to heal. Vesicles are typically smaller than 0.5 centimeters, while bullae are larger.