Allergies?

yes because it's an open space and some insects are there

It is more what you might be allergic to in the woods. There are many possibilities, though the odds are way against your being allergic to the entire woods. Perhaps there might be an insect you might be allergic to or poison ivy or what have you. I assure you just being the woods or just being an open space is not a problem.

No, not so strange...there is more to explore like anxiety/fear of woods? Panic attacks also mimic physical symptoms. But I am just someone in cyberspace, always be safe.

You can be allergic to anything. A concept, a time period, a word. Traumas created at the time that you are in contact with the allergen e.g. eating chocolate cake while your parents are fighting, create an allergy. There are several ways to fix them. If you are a do-it-yourself kind of person try www.emofree.com

To define the word allergy...1)formal: an abnormal reaction of the body to a previously encountered allergen introduced by inhalation, ingestion, injection, or skin contact, often manifested by itchy eyes, runny nose, wheezing, skin rash, or diarrhea. 2)informal: a stron dislike or aversion, as toward a person or activity: ex. "he has an allergy toward hard work"