Why does skin heal?

Short answer

The body stops bleeding, grows cells, and builds tissue that fills the wound through a repair response.

How it works

Healing varies with wound depth, location, infection, and overall condition. Increasing redness, swelling, or pus should be checked.

Key point

The practical point is this: Increasing redness, swelling, or pus should be checked.

References

• National Institute of Arthritis and Musculoskeletal and Skin Diseases: Learning about skin
• National Institute of Dental and Craniofacial Research: Oral health