I didn't think having a high tree pollen was a big deal, but maybe it is. The thing is, I don't know what a common symptom is of it if you have allergies to basically everything outdoors. Are headaches common? I mean, if I don't go outside, it feels like I still get the symptoms anyway. How does that happen? I do have indoor dogs (3) that go in and out through out the day but I wouldn't think that would have any effect on me. Can someone give me insight as to how I would have symptoms without even going outdoors?