What are the main types of scars?

The main types of scars that may benefit from scar treatment are:

• atrophic scars – these appear as sunken areas or pits in the skin and include chickenpox and acne scars 

• hypertrophic scars – these are raised, red scars that remain within the boundaries of the original wound

• keloid scars – these are raised, red scars, but unlike hypertrophic scars, they extend beyond the original injury area 

• contracture scars – these are often caused by deep burns and cause skin tightness that can limit movement and function