Ds 14 appears to have had a personality transplant in the last 2 months! Noted a major change in his physical appearance and now he's a completely different person. Been suspicious that he's been experimenting with alcohol and smoking but the last 3 weekends have been hell- he's out with friends, won't answer texts and is now a compulsive liar. School also phoned last week to say he had truanted (never done this before). I'm really struggling now, have taken everything away so nothing left to use as consequences. When I talk to him he says he's sorry and I actually feel really sorry for him as I believe the pressure of teenage life nowadays is massive. Any advice would be greatly appreciated.