Whether or not a scar grows larger is related to the nature of the scar. Regular scars generally do not grow larger, but hyperplastic scars can grow larger over time. Scars, also known as keloid scars, are the product of healing and repair of skin injuries to the dermis, and are categorized into regular scars, hyperplastic scars, lumpy scars and atrophic scars. 1. Conventional scar: it often occurs after skin trauma, usually limited to the scope of trauma, with rough surface or pigmented changes, and the local skin is flat and soft. 2. Proliferative scarring: also occurs in skin trauma, manifesting as red patches rising above the skin that are confined to the wound in the early stages. If not treated in time, it may get bigger and bigger with time. 3. Keloid: patients mostly have keloid, mostly manifested as red plaques growing above the skin surface, the scope of which exceeds the scope of the injury, rising above the skin surface, stretching outward in the shape of a crab’s foot, with a smooth and shiny surface, often accompanied by itching or pain, and will usually increase in size if not treated promptly. 4. Atrophic scarring, on the other hand, manifests itself in the form of skin depressions, which in severe cases may cause the surrounding tissues or organs to be affected. As a result, the scar does not necessarily grow larger, but may remain unchanged or lead to skin depressions. When scarring is more serious and affects aesthetics or organ function, it can be treated accordingly.