Blisters

Blisters are (fluid-filled) vesicles that form under the top layer of skin in response to damage. The skin makes clear fluid in a fluid sac to protect and heal the surrounding skin. They often vary in size and can cause discomfort and pain. There are several causes of blisters:

1. Friction: Blisters on feet and hands are often caused by prolonged friction from shoes, garments or tools.
2. Allergy: An allergic reaction due to an allergy or chemicals can cause blisters.
3. Freezing: Freezing can lead to blister formation.
4. Infections: Bacteria or viruses sometimes cause blisters. Think cold sores (herpes simplex).
5. Burns: Burns caused by heat or chemicals can lead to blisters. A severe sunburn due to UV radiation can also lead to blisters.

Blisters need proper care and protection from more skin damage and infection. Blister treatment depends on the type of blister and its severity. Do not puncture blisters, as the fluid sac helps heal and protects against infections. You can apply a bandage or blister plaster, on sale at drugstores. For prevention, you can wear well-fitting shoes, sunscreen and protective clothing.

Example of a blister