I have what appears to be chronic sinusitis of the maxillary sinuses and for whatever reason, I find that the pain intensifies during the evening? Is this odd? Or does sinusitis behave like fevers where it is worse in the evening? The mornings, I'll also have some pain, but a couple of hours after I get up it gets better, just to get worse in the evening. I'm looking into balloon sinuplasty, I guess I'm a good candidate since only my maxillary sinus is affected.