I've had an ailment that's been troubling me for a couple of weeks and it's driving me round the bend. Constant runny nose, but no other cold symptoms. I've spent a fortrune on cold remedies, but they don't do anything. Frankly, I'm dying here. My best guess is I've developed an allergy to pollen, and because I've been recently spending a lot of time at my friend's place where he has a lot of land he's allowing to grow wild to benefit wildlife, I've become sensited. I've never suffered from hay fever before, but on the other hand, I've never spent quite so long as I now do in an entirely rural environment. What's the cure?