Maybe ween can cause a reverse-inflammatory effect in some people, it would explain the neck pain and his trouble breathing; Swollen sinuses do feel like they're "stuffed up". I also had to quit weed because it aggrivates my pain which is caused by inflammation in my spine, and I've heard a few other members here say it makes their back pain worse.

Makes me suspect every so many people have a body chemistry that, after gaining a high tolerance, starts rejecting the tetrahydrocannabinol and releasing inflammatory chemicals to counter the anti-inflammatory cannabinoids. There are even rare conditions where people's bodies release excessive amounts of inflammatory molecules, an auto-immune disorder I suppose, a neurologist tested me for this once.