I have Hashiomoto's thyroiditus (male, 63) and I am on Synthroid 150 mg. I seem to have developed chronic sinusitus (rhinitus). I am miserable -- lots of pain in sinuses below eyes -- its like someone is in there scrapping it raw with sandpaper and pressure. Makes me feel very tired as well as having to deal with the pain. No signs of infection from my standpoint. Steroid nasal sprays and antihistaines don't do any good, I have tried all of them. My TSH is in normal range for my age (below 2.5) levels (just checked). Allergy tests reveal nothing. Though I do seem to be sensitive to tree pollen, it is far past that season now. This pain/irritation has been going on for 5 months this time -- the only relief is with painkillers (ibuprofen or tylenol when mild to moderate), percocet when worse. I had sinus surgery 10+ years ago, corrected deviated septum and opened up sinuses.