I've thought maybe it was depression, but it's like you say, one day I'll feel normal, just fine, and the next I'm having the facial pressure/pain, getting sick at my stomach because of it, head feeling lopsided and can't walk straight.
I use the hot water
bottle on my face to relieve pain, too, and
the ENT said that was fine. My husband's always fussing - thinking that's making me worse. But it does help.
I go for the allergy testing next Monday. I'll post again.