Do you remember when you fell off your bike or bumped a sharp object? Childhood wounds are things we often forget, but our bodies often record them as scars.

Video: Mechanism of scar formation in skin and viscera images 1
Skin scars that we often see.

So what is the real scar and why do we have it for so long?

The body produces special tissue to heal itself, forming a scar that has many different skin characteristics.