The main causes of dimples in children whose parents do not have dimples include the following: first, symptoms caused by genetic mutations. If the parents do not have dimples, but the child has a genetic variation, it can also cause the child to have dimples; this is a small but probable event. Secondly, it is caused by the child having very rich expression muscles. If a child has very rich smile muscles combined with a lot of facial fat, this can also cause dimples in children and is due to the individual development of the child and is not a cause for undue concern. If the child’s parents do not have dimples and the child will have dimples, this is possible.