Scars scratched by nails can be removed by topical medication, glucocorticoid local closure, physical therapy and other measures. 1. Topical medication: When early scars are not yet formed, silicone gel and polysulfonic acid mucopolysaccharide cream can be applied locally, which have certain auxiliary effects. 2. Glucocorticoid local closure: if the local formation of obvious proliferative scar or keloid, you can local injection of glucocorticoid drugs such as trimethoprim for local closure, has a certain auxiliary effect. 3. Physical therapy: atrophic keloid or keloid can be treated by fractional laser, using the thermal effect of laser to destroy and decompose the scar tissue and promote the rearrangement of collagen fibers, so as to achieve the purpose of treatment. For scars scratched by nails, it is recommended to go to the hospital for examination first, and medications should be used under the guidance of a professional doctor.