question: My 14 year old son started having severe pain in his teeth when we started descending on the airplane this afternoon. He spit out a small amount of mucus and felt a litter better. He had taken a Zyrtec prior to traveling. The pain calmed down for about an hour or 2 but is now hurting him again.  Had teeth checked and X-rays  a month or 2 back so I doubt it is a cavity.