Friction blisters are one of the most common types of blister and they can be difficult to avoid. It’s not easy to prevent your feet and heels rubbing against footwear, especially when engaging in strenuous activity.
It’s estimated that over 400,000 people take part in marathons in the US, and up to 39% will get a blister.
How do friction blisters form?
Friction blisters are commonly formed by repeated rubbing, to the point where the skin gets hot and stings. Fluid then fills up underneath the epidermis (the top layer of skin).
They can also be caused by excessive moisture and perspiration. This makes them common in summer and means that athletes are especially at risk of developing blisters from running. Blisters on heels from boots are also a painful irritation for many, as are blisters caused by thin socks. Thankfully, there are things you can do to prevent them forming.