Hey man, I've felt these same symptoms you're describing for some time now. I've also scoured the internet trying to find some info on it, but so far you're all I found. I'm not sure when it started for me, but it's been quite a while that I've had these odd sensations. I used to smoke about 3-4 times a week and recently I've slowed down to see if it helped, but it hasen't. I've been weed free for about a month so I guess all I do now is wait.
Let me know if you've made any progress.