Medicare First Aid on X: "Blisters on the feet, which are the most common type of blister, can be very painful, and are caused by friction. Our infographic breaks down the anatomy
Life Care Hospital - A blister 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),
![Blisters containing serum arranged in a rosette pattern with a central... | Download Scientific Diagram Blisters containing serum arranged in a rosette pattern with a central... | Download Scientific Diagram](https://www.researchgate.net/publication/314201332/figure/fig1/AS:974683541368833@1609394073277/Blisters-containing-serum-arranged-in-a-rosette-pattern-with-a-central-crust-on.jpg)