A scar is an area of skin that is permanently changed after a wound. Scars can form after a burn, surgery, an infection, acne, a sore, or a cut. It’s usually thicker than normal skin and can be ...

Scar tissue forms when a wound heals but is different from skin tissue. For example, it is less elastic, leading to tightness, limited movement, and pain. Exercise, moisturizing, and other home ...