Could be allergies or sinus infection or even neuropathy. Do steam with essential oils - boil water, pour in bowl, get a towel and lean over the bowl with towel over your head. Essential oils can be added to the water, but not too many or too much. (frankincense, peppermint, rosemary, oregano, lavender are some choices, but there are experts on this that you can ask) Also Nettie pot, gargle with warm water and salt and many remedies you can try, just not all at once!