The cause of scar may be skin defect caused by some trauma (such as car accident, scald, etc.). ). Scars can be roughly divided into five types: 1. A good scar refers to a linear, flat scar, parallel to skin wrinkles and the same color as normal skin color. 2. General scar, the scar is slightly raised, and the color is darker than normal skin color. 3. Hypertrophic scar refers to the raised scar, which is dark in color and will feel itchy and painful, but the degree of the raised scar will not exceed the scope of the wound and will flatten out after a period of time. The crab's feet are swollen because the scar is shaped like a crab's limbs. When it turns brown, the scar will invade the surrounding normal skin. This is because the fibrodental cells inside are constantly dividing and will expand like a tumor. The common parts are shoulders and chest. 5. Tattoo scar, because the wound was not cleaned up when injured. This kind of wound treatment is different from ordinary scars. The superficial layer can be removed by laser, and the deep layer needs to be combined with resection. Traditional treatment methods, including excision, Z-shaped plastic surgery and injection compression, can be simply explained as follows:

★Z-shaped plastic surgery: If the tension of the wound itself is too large, the scar will widen or even bulge, so the plastic surgeon will do Z-shaped plastic surgery according to the direction of muscle action and change the direction of the scar.

★ Compression method: If the newly generated scar can be compressed for a long time, it can make the scar mature as soon as possible, which is why we use adhesive tape or silica gel sheet on the newly generated scar in clinic.

★ Injection method: If there is itching, pain or gradual thickening between scars, hormones can be injected into the scars once a month, usually without any side effects, except that some women may have irregular menstrual cycles after injection.

★ Skin grafting: If there are many small sunken scars, such as acne scars, laser or mechanical dermabrasion can be used to flatten the scars, but highly proliferative scars are not applicable.

Plastic surgery has various tools to beautify scars, because each scar is a different type, so the treatment of each scar is a challenge for professional plastic surgeons, which requires the cooperation of patients and doctors, as well as tailor-made programs.