Superficial scar Most often seen after abrasions and superficial burns, characterized by slightly rough appearance, pigmentation changes, flat and soft localization, no functional impairment, and generally does not require treatment. Hyperplastic scar, also known as hypertrophic scar, is mostly seen after self-healing of deep second and shallow third degree burns and thick medium to thick skin donor areas. It is characterized by thick (up to 1-2 cm) and hard, red or dark purple color, painful and itchy, often affecting work and rest. After about 6 months, the scar becomes soft and slightly flat, the congestion decreases, the capillaries are reduced, and the itching and pain diminish or disappear. Atrophic scar, also known as unstable scar, is commonly seen after electric shock to the skull, large burns and chronic ulcers healing. The scar is hard, with few local blood vessels, light red or white in color, and the deep tissues are tightly adherent and cannot tolerate friction and weight bearing. It is often persistent after rupture and can lead to malignant transformation in advanced stages. Contracture scars are most often seen in deep burn wounds that are left to heal on their own without skin grafting, often severely damaging function, such as lid ectropion, lip ectropion, chin-thorax adhesion, and flexion contracture deformity of joints. Long-term scar contracture can affect the development of muscles, tendons and nerves, causing stiffness, dislocation and deformity of joints. Keloid, also known as crabfoot swelling, is a lump formed by connective tissue. They are most often formed after burns, injuries, or minor injuries that are not brought to the patient’s attention. The edges of the keloid are significantly higher than the skin and beyond the original lesion, pink or purplish in color, extremely hard, inelastic, and with poor blood supply. Keloid scars are particularly likely to occur on the upper part of the body. The head, neck, median sternum, shoulders and upper arms are the most frequent sites, while the eyelids, areola and penis are rare. Webbed scar The scar is wrinkled and resembles a duck web. These scars are most commonly seen in burns and occasionally in cuts and tears of the skin and improperly placed surgical incisions. Large webbed scars are found in the anterior neck, axilla, elbow fossa and perineum, while small ones are common in the inner and outer canthus, nasolabial folds, corners of the mouth, nostrils, palm side of fingers, finger webs, tiger’s mouth, urethra and vaginal orifice. In addition, there are also depressed scars, bridging scars and linear scars.