sensitivity

I've been getting some headaches lately and was wondering if vaping could have anything to do with them. So i messed around with the juices and started to draw some preliminary conclusions. Sometimes, I definitely drink less water than i should, and this likely plays a big role. I need to drink...

Can you develop a sensitivity to pg after vaping for a long time? I vaped for a year with no problems. Then I shamefully went back to cigarettes for a few months. Almost as soon as I began to vape again it seemed like the sides of my neck were getting tight or inflamed. Its causing all kind of...