My 14 year old son is a manipulative liar and sociopath

My 14 year old son is a manipulative liar and sociopath. He lies about EVERYTHING. He lies about big things, like skipping school or missing an assignment, and small things, like not doing a chore. He is also quite manipulative -- he will smooth-talk people to try to give him something he wants. He also offers to do things he dislikes under the guise of doing them from the goodness of his heart, but he's actually doing those things to get something he wants. He also is quite disrespectful towards me and his mom. Whenever we tell him to do simple things, like take out the trash or do his homework, it results in a cascade of abuse, either verbal, emotional, or physical. He has given both me and his mom the silent treatment a lot of times, or, if he's willing to speak to us, his speech is littered with curse words. He has also given us big bruises when he is fighting us. He has really hurt us, both physically and mentally. He also acts like this at school. He has actually sworn at the teachers and defaced the school's walls with crude, inappropriate drawings. Because of this, he has been in detention a lot, but that hasn't helped. We've tried everything. Parent-enforced consequences like grounding, natural consequences, and so forth, but they haven't helped. He doesn't have anything like depression, ADHD, or ODD. At this point I just feel like sending him to a discipline camp -- please help :( via /r/Parenting https://ift.tt/30VeXax