[{aspiring_to_clarity}]

I am not a runner really, so the posts by others are probably more helpful, but have you thought about whether you may be allergic to something that is a winter allergen? I would guess it would affect you even when you aren't running though. Not really sure. I know that I can be outside in the summer, but right about this time, we get mountain cedar which wreaks havoc on my whole body.

Good luck. I hope you are able to find a way to continue running!