Hi Yellowsky
I’m in a similar situation. My partner (who I’m trying to leave) is an addict. Started with cocaine and progressed to turning it into crack. He has the paranoia and hallucinations…
Like your son, he truly believes they are real. He hears things that are not there and see things that are not there… he thinks people are spying on him. He is constantly banging on the walls and ceiling – he’s damaged them – in response to what he hears and sees.
He did stop at one point and the delusions/paranoia decreased but were still there… definitely not as bad though. Unfortunately, he is back on it and can’t seem to stop. I think it does permanently change the brain if they do it enough for a sustained period of time. It basically seems to then cause a mental health issue.