Keloid scarring is rare, and keloid scarring can appear as an infinite proliferation of keloid-like scars after injury to any part of their body. Typical symptoms are skin injuries caused by trauma, burns, acne, insect bites and other factors, keloid scars appear after healing. After wound healing, the keloid scars grow outward, protrude from the skin surface, hard texture, more than the original scope of the injury, and can not subside on their own, but infiltrate and expand to the surrounding normal skin. The skin lesions can be red at the beginning, and with the passage of time, they can gradually change to brown. Most keloid patients have localized pain, itching and other sensory abnormalities in the scar, and a small number of people in the local hypoesthesia. For people with keloid scarring, it is more important to protect and care for them, and they should avoid trauma, burns and other skin injuries in daily life, so as not to cause serious localized scarring.