Well there certainly are issues that many new Vapors experience like dry mouth, acne, dandruff, or dry hair. Are you by chance using a Drip Tip? This may actually be reaction to the material of the Cartomizer labels since it appear rather centralized. You may want to try VG only cartomizers and juices....or simply continue
vaping and see if this is simply a temporary condition. I'm guessing you have no known allergic reactions to PG, as most with PG allergy sufferers are pretty aware of it.
In any case I hope it all works out for you!
Added: looks like we posted simultaneously...on the Drip Tips...there are 2 types..Aluminum and Delrin Plastic. If you don't have them I would suggest getting 1 of each just in case you might have reaction with one and not the other.