Polydactyly is one of the many symptoms of congenital malformation, or a unique symptom. If it is unique, it is often related to the dominant mutation of somatic chromosomes of a single gene, rather than the mutation of multifactorial traits, but the mutation of different genes will cause polydactyly. In other words, children's fingers are inherited by adults. It's possible that adults don't show it, but it doesn't mean they don't carry it. If you feel that it has an impact on your appearance, you can go to the plastic surgery department for surgery. The operation was minor and the prognosis was good.