Detailed answer

Contracture scars are caused by the tightening and shrinking of skin after a burn or injury. They appear as tight, shiny, and raised scars that can restrict movement. Acne scars, on the other hand, result from the healing process of acne lesions. They can be divided into two main types: atrophic scars (depressed or sunken scars) and hypertrophic scars (raised and thickened scars). Atrophic acne scars include ice pick scars, boxcar scars, and rolling scars, while hypertrophic acne scars are usually raised and can be red or pink in color. Overall, contracture scars typically occur as a result of burns or injuries, whereas acne scars are a common consequence of acne breakouts.