My husband has chronic sinusitis or something else. He has had sinus surgery to open the chronic inflammation and it really has not made much of a difference. It did help maybe the first year after surgery. His Dr. just gives him another antibiotic about every other month it flares up and wont go away. We can be shopping at a stor or he could be working inside or outside. driving down the road or just waking up in the morning that will cause a reaction of sneezing etc. I guess my question is, there anything else beside allergies that could be causing his reactions?