Must be contageous. I had my RAI treatment about a year ago and my salivary glands started bothering me 5 weeks ago. Went to the dentist and they sent me to an oral surgeon who said there was nothing wrong with my jaw. Going to an ENT specialist in two weeks.
At first the pain was terrible. Gargled with salt water, hot compresses, and ibuprofrin help. The bitter/metallic taste in the mouth is nasty.
I realized it was salivary when I noticed that it only hurt when I ate. I can talk or bite on a stick without any issues, but if I eat (and my mouth produces more saliva) the pain gets much worse. Found an article online, printed it out for my GP and they agreed that that is probably the issue.
I did read somewhere that taking Mucinex (plain, not D or DM) can help thin the secretions. Going to get some today and see if it helps. Also, stay away from decongestants as they can dry you out which can cause more swelling.
Spoke to my oral surgeon yesterday who now wants to do a case study on my to publish in a dental journal to let other dentists know about the issue. Hopefully that will help diagnose this correctly.
Out of curiousity, did any of you suck on candies those first few days? They say it's supposed to help get the radiation out of your glands. I was sucking on lemon drops constantly, but I guess not enough.
Good luck all.