Hi – my 16 year old son has gone off the rails. We’ve had some success getting him back to earth but he’s up all hours of the night and when challenged he looks like he’s chewing gum (and has millions of packets of it everywhere) but he looks like he’s chewing when he’s not. Any ideas? Dry mouth – he’s not smoking as i’d smell it in his room but he’s on something. Just don’t know what.