I'm having the same problems. Here's what I think, but this is only in my case, just thinking you may be similar from the sounds of it. I think it has to do with blood sugar. Here's why, I've always been close to being hypoglycemic. I'm not, but low sugar has negative affects me. If I don't eat right my sugar bottoms out. Not enough to end up on the floor, just enough to have side affects. Here's how it feels to me. First I start to get what feels like a anxiety, then a little later I start to get I little shaky. At first I couldn't figure out about the high anxiety, that started happening way to often after quitting the stinkies & vaping like a lab monkey. Any way I've starting reading about vaping & diabetes. Seems that vg will/can cause suger swings like a roller coaster. Now when I have those attacks I go for orange juice which seems to help a lot. Seems to level out my sugar. I think the liquid/vaping is making my sugar spike, then crash. I'm about to get a test kit so I can actually start testing my levels just to see what going on & what I need to do 'cause I'm sure as heck not going to give up vaping.
As far as for me, it's not the nicotine. I could smoke kools non stop & some times even dip kodiak & smoke at the same time with out a problem. I have a high tolerance for nic.
I don't know. Just food for thought.
Hopefully my rambling makes a little sense & may be something to consider.
