It happened again while meditating last night.
What's most interesting is the pain is accompanied by an itchy sensation at the back of the throat. The type that you can relieve by coughing.
The whole experience went away pretty quickly this time.
It doesn't happen too frequently, but I have had the experience where the swallowing reflex seems to have been put on hold for the duration of sitting and I've ended the meditation choking on an enormous mouthful of spittle
I'm happy to know I'm not alone.
There seems to be a precise moment near the end of the in-breath where swallowing doesn't seem to cause to much trouble to concentration. When I start noticing an accumulation of saliva, I'll wait until the appropriate moment and then swallow.
The salivation is very common. Try resting the tongue so the tips is against the roof of your mouth near the top of your front teeth. The saliva will naturally drain.
As for the other aches and pains, the expression of your tear ducts - this could be the result of unconscious tensioning and relaxing of the muscles in the head. I would be very surprised that in time it doesn't just dissipate on its own. In the meantime, keep your attention on the meditation object.
I will regard all of this as temporary and allow it to happen while it lasts while staying focused on the breath.
Still kind of curious about why it's still happening, but oh well. I'll let that go too.
Thanks for your help.