A new pair of shoes often causes pressure and friction
Fluid fills the outer layer of the skin to create a cushion which is fragile to more pressure
A blister is an area of raised skin with watery liquid inside. So what causes blisters? They are your body’s clever way of protecting itself from pressure and friction, from, for example a new pair of shoes.
“They are your body's clever way of protecting itself from pressure and friction”
Friction tends to cause the outer layer of skin, the epidermis, to separate from the layers beneath and fluid fills the space. This is an attempt to cushion the wound beneath from further pressure or friction and lock out causes of infection. Unfortunately, blisters can be easily burst by more pressure. And as we know, blisters both intact and deroofed are extremely painful if not treated, and can easily become infected.