My son has a pain in his back. He says it feels like someone is stabbling him with a chard of glass. He had me look at his back cause he said it feels like it s his skin. I had him lay down on his stomach and the only thing that I could see was slight swelling on the right side of his spine from top to bottom along the mid section. Any ideas? It s been going on for a week and seems to be getting worse and more painful.