Birthmark is harmless, basically not malignant or inflammatory, running water infection and the like. It's just that some birthmarks grow on exposed parts, such as face, neck or forearm, which affects the appearance. In addition, some people often look or ask curiously, which brings great psychological pressure to patients, and some occupations also need to be beautiful. Therefore, the birthmark on the face or other exposed parts is best handled. However, the treatment process is long and the treatment effect is not necessarily ideal. The cost of treatment is also considerable. Be mentally prepared.