Generally speaking, the causes of children’s hand barbs include the following conditions. The first is caused by the rapid development of the skin of the fingers in children, because the skin of children develops, very rapidly. In cases where development is particularly rapid, children can develop puckered skin on their hands. This condition does not require special treatment and is a normal physiological phenomenon. All that is needed is to apply emollient creams to children to protect the skin on their hands. Secondly, it is caused by bad habits of children. Some children get barbed hands because children often bite the skin of their fingers with their teeth. In this case, it is important to get the child to change his or her bad habits in time. In addition, if a child has a micronutrient deficiency, this can also lead to hand barbs. In this case, blood tests for trace elements can be performed. For specific micronutrient abnormalities, supplementation can be done accordingly. For example, if there is a zinc deficiency, the child can be given zinc gluconate oral solution.