Like you, it feels like a sinus infection, it causes brain fog and cognitive difficulties, vertigo, lightheadedness and feels similar to
anxiety panic
attacks in the sense that it creates derealization for me, but it is way worse and very painful and real. I’ve tried allergy meds, massage therapy, meditation, nasal sprays, etc. nothing gets rid of it. Feels like my eyes are always heavy and something it’s pulling on them.