So, I've been dealing with chronic hives in the evening time

So, I've been dealing with chronic hives in the evening time for almost 4 months and the past couple days it has turned into full-blown anaphylaxis 2 nights in a row. I'm on a slew of antihistamines and now high dose steroids. Has anyone experienced something like this before? I was just referred from my dermatologist to see an allergist and I'm just waiting to get in at this point.

So this was just a sudden occurrence with nothing beforehand in your life?

Nothing has changed. No new meds, no environmental changes, detergents, soaps, nothing.