Almost everyone has had \”hangnails\”, which are painful when touched on the hands, and also affect the appearance of our fingers. Many people\’s first reaction when they see barbs on their hands is to tear them off. Children are the same. When they find barbs on their hands, they can\’t help but want to tear them off with their hands or bite them with their mouths. The child will tear it at will. If he is not careful, he will tear off a small piece of flesh, which will bleed and the baby\’s hand will hurt…