The kid is depressed, and self-pitying. Sounds like some weed action too. It's really a little late in the game for the doctor trip unless it's something he himself wants to do. Sorry to say, but the best thing to do with a kid in that shape is to kick him out. Some kids have to be forced to face life and get off the pity potty. Don't feel guilty, you are doing the best thing in the world for him, and he is probably something only his bio dad can help him get over, since some of his resentment may be tied to you. If you keep him around, he's just going to get worse. His depression will turn to anger and he will start in on other negative behaviors.