I've had sinus headaches for years without realising that that's what they were, because apart from a stuffy nose, I don't have horrible mucus pouring out of my nose. My GP agrees it's sinusitis because of the position o the pain but thinks I don't have an infection because there's no green mucus. The only treatment he's given me has been nasal steroids drops (which didn't help) and painkillers (which are ineffective). I'd rather be treating the cause than the symptoms but I don't know what's causing the sinusitis. Things improved somewhat when I started daily nasal irrigation with buffered saline a year ago but I still get, on average, two bad headaches a week and once started, they last all day and are quite debilitating. Is this really not an infection? Should I be getting some kind of investigation? Getting a referral to an ENT specialist?