Blisters are small sores without any consequence that discomfort, unless they become infected. They are due to a permanent friction of the skin which causes a detachment of the superficial layers of the epidermis; between the base attached to the deep part and this peeled skin (dead skin) a clear liquid accumulates. The pressure of the liquid causes pain.
If after the formation of the blister it does not stop the friction, that it is not protected with a bandage, the peeled skin can tear, leaving out the transparent liquid and exposing the superficial dermis. This can cause a sensation of severe pain and promote infection of the wound.
There are conditions that can increase the risk of blisters:
> friction caused by new shoes (or shoes that are too small or too big)
> wearing shoes without socks
> heat, humidity and perspiration
> sport can promote the formation of blisters on the soles of the feet or on the toes
> carrying a suitcase or a heavy bag can promote the occurrence of blisters on the palms of hands
> do manual activities using material that rubs against the skin of the hands.