How to deal with hives?

Ugh.
This is something that I guess isn’t treatable. I’ve gone to the doctor but they are never there when I go so it’s impossible to really get an answer. I’m pretty sure they are chronic because they happen a lot. I have also concluded they are because of Anxiety.
I usually take Benadryl if they last a while without going away. Are there any other remedies? The hydrocortozone(spelling?) cream doesn’t work.
If anybody on here deals with them, let me know how you remedy it.

These rashes are circles not raised, usually with a dark red ring and a lighter red inside. I think they are hives. They happen a lot when I am stressed.