I grew up in Ohio and went through the pain of annual scratch tests and weekly allergy shots all through my childhood and teen years. By the time I left home for college, I felt like I'd had more than enough allergy shots to last a lifetime. I moved to Arizona for college and had a blissful couple of years with next to no allergies at all! Then slowly but surely all of those allergy symptoms started creeping back. I went to the allergist, had test spots all up and down my arms with only three spots that didn't respond. It turned out to be the test spots where they'd only used saline. The good...