Congenital preauricular fistula is a congenital disease, which is caused by the poor development and closure of the first branchial arch during the growth and development of the fetus. It is mainly caused by heredity, and may also be inherited to the next generation, but not necessarily everyone will cause heredity. If the preauricular fistula is not infected and inflamed, no special treatment is necessary. Pay more attention in daily life, do not squeeze or dig, avoid local water inflow, and observe closely. If there is infection and inflammation of preauricular fistula, it needs to be completely removed by surgery to avoid repeated attacks, which will lead to local scar hyperplasia and affect facial beauty.
