The child has a small tail at the back of his hair, okay?

In fact, many people will have such a situation. This is a normal situation, and it is not a harbinger or symptom of any disease. It is a genetic phenomenon, perhaps because one of the parents has such a situation, or there is no such person among the parents, perhaps because the parents' genes are dominant, but they are recessive in their children. In this case, there is no good treatment, just accept it happily.

Parents are advised to do this:

First, don't impose your ideas on your children, and don't make them feel abnormal. Let the children know that all people are different and they are different. This is just a manifestation of themselves. Let children learn to accept their differences.

Second, if parents really care, they can appropriately let their children have long hair and cover the "small tail" behind them.

Third, this situation is acceptable as long as it does not affect health. Or if the child feels uncomfortable when he grows up, he can remove the excess hair on his back through laser surgery.