Hi Imagine Dragon,
I have asked someone who knows, and weed is unlikely to cause those symptoms so it sounds like a separate medical condition. Do you know if its got a lot worse since going to the docs? Was he coughing up blood when he went there today? If you think that he hasn’t told all of this to a doctor, I’d be inclined to try and get him to casualty if you can. Its hard, if he’s not scared by it, he probably won’t want to go. This is my experience, and your son may be very different: For quite a long time, I thought that he was doing weed, but it turned out to be other stuff as well. Its very hard to get them to open up and be honest about what is actually going on, but you might find an opportunity if he’s worried about his own health.
I know how scary this is, and how powerless you feel. Its the hardest thing, watching your child hurting themselves and not being able to do very much.
I really hope this shakes him up and he lets you get help for him.
Jackie x
I will post about the ADHD stuff when things calm down for you.