Hives, antihistamines, and allergies??

I started experiencing chronic hives and various forms of eczema back in August. It was definitely triggered by stress, and dermatology and allergy have been doing so much to get things under control.

Well, now it’s tree season.

I’ve been super allergic to birch, and moderately allergic to oak and maple for years. I am on so much antihistamine for the hives. (2 Allegra daily, and 2 Zyrtec daily) I feel like I should be able to walk into a birch forest on all that.

So why am I Sneezy McSneezepants? And anyone take more than this?