Hi June,
I used to suffer terribly from sinus in my younger day, long before Lupus so I sympathise :hug:
I found that the old tried and ture inhaling steaming water with vicks or something similar in it helped clear them ,,,,,,,,,,,,,, I had to do that several times a day.
The sores you describe are very common in Lupus btw, they are just like the mouth and vaginal ulcers some of us get. For those, I generally use a saline spray (which may even help your sinuses) and then I coat the inside of my nose with vaseline, to give them a chance to heal. Otherwise they just keep forming a scab (yuk) and seem to never heal.
love
Lily