回复：Mongolian Spot is so common among Asian kids.

thanks for your comment. I agree with you.Since my son has been to couple of daycares and preschools so far and I never heard about such complains or inquires or had any problems due to this mongolia spot.That's why we didn't think about have to explain to teacher each time he start a new school. But he just began this special preschool running by elementary school,we got such trouble without any imagination. It makes our parents very unhappy