They're basically fluid-filled bumps that look like bubbles. Blisters are most common on the hands and feet. Rubbing and pressure from new shoes or shoes that are too tight often cause blisters on the toes and ankles. You might also get blisters on your hands if you're working with a tool repeatedly.

Where do you get blisters from?

Blisters are most often caused by skin being damaged by friction or heat. Certain medical conditions also cause blisters to appear. The damaged upper layer of skin (epidermis) tears away from the layers beneath and fluid (serum) collects in the space to create a blister.

How do blisters form?

Blisters are often caused by excess friction. They can develop due to wearing socks and shoes that do not fit correctly. When the skin becomes damaged, a small pocket will naturally form over the affected area, and this is filled with a protective liquid.