PATHOLOGY

Detailed explanation-1: -As a wound closes, skin cells create collagen, which forms the building blocks of a scar. Scar tissue is stiff and inflexible, and excessive collagen production can result in scarring that impedes movement or facial expression, as when a scar covers the elbow or the face.

Detailed explanation-2: -Keloids and hypertrophic scars are caused by cutaneous injury and irritation, including trauma, insect bite, burn, surgery, vaccination, skin piercing, acne, folliculitis, chicken pox, and herpes zoster infection.

Detailed explanation-3: -A hypertrophic scar is a thick raised scar that’s an abnormal response to wound healing. They more commonly occur in taut skin areas following skin trauma, burns or surgical incisions.

Detailed explanation-4: -When skin is injured, the body creates new tissue made of collagen to help reseal itself. Collagen plays many important roles throughout your body, including plumping up your skin and helping your cartilage protect your joints. When a scar develops, collagen fibers repair damaged skin and close any open areas.