production of a clear liquid that moves from the back of my nose to my windpipe, which results in coughing/choking and wakes me.
OK David--how long has this been going on?
Besides elevating the head of the bed have you tried anything like antihistamines?
No medicines of any sort - so far.
This time, about three weeks
OK--we can continue after this if you'd like David.
First off this sounds like a sinus/allergic rhinitis situation and for that, at least at home, I'd suggest you start with a saline nasal spray or irrigation system to be used four times a day, the last time being just before bedtime.
I'd also suggest a 24 hour antihistamine like Claritin on a daily basis
That together should resolve the problem for you but if it doesn't you'd need a prescription cortisone nasal spray like Nasonex
thank you Doctor