What are blisters for?

Blisters serve several important functions in the body:

1. Protection: Blisters form as a protective response to injury or damage to the skin. The fluid-filled sac helps cushion and protect the underlying tissues, reducing pain and promoting healing.

2. Separation: Blisters help separate the damaged skin from the healthier surrounding skin, preventing the spread of infection and allowing the damaged area to heal without interference.

3. Cooling Effect: The fluid inside blisters contains plasma, which helps cool and soothe the affected area, reducing inflammation and discomfort.

4. Lubrication: The fluid in blisters acts as a natural lubricant, reducing friction and allowing for easier movement of the skin over the underlying tissues.

5. Immune Response: Blisters can contain various immune cells and antibodies that help fight infection and promote healing.

6. Signaling: Blisters serve as a visual and tactile sign of an injury or skin condition, prompting individuals to seek medical attention if necessary.