I'm considering I'm having issues with PG. Yesterday and the day before, a few hours after vaping (no analogs), I get the feeling of being thirsty, a little bit of a headache, increased heartrate, and a feeling of exhaustion- like I've been in the sun a lot sweating (but I hadn't been). I thought at first it was the nicotine, it doesn't happen fast enough for me to believe that is the case- I've vaped the same before earlier in the day and I feel fine. Drinking Gatorade seems to help. I think it's the PG because I notice with certain juices, the vapor is less dense, and I assume that's due to high PG. When I've vaped blends I've made myself, I work with VG or 50/50 VG/PG and that doesn't seem to happen. Still, I'm hoping its a temporary thing, and not permanent.
I've had lots of detox reactions in the past couple years (when I tried to get healthier, I'd just feel sicker), so it wouldn't surprise me to find I have sensitivities to vaping. About 5 months ago I ended up in the emergency room with the diagnosis of exhaustion (I felt like crap all over, I was convinced I had something really bad), the only thing they could find in my blood tests was elevated liver enzymes. I had tried a gluten-free diet for a while, they were doing tests to see if I had Celiac disease, but the results came back negative.