I Have Had Hives Now For 4 Weeks, I Get

I have had hives now for 4 weeks, I get them on my hands, wrists, feet, lower legs, neck and face mainly, but have had them on thighs and shoulders but not often

They come and go within the hour however they are really itchy and burning.

I have no apparent food allergies and I eat a pretty basic diet with plenty of whole foods, fruit and veg

I think it's something to do with friction/getting hot/exercise

I am a personal trainer and a Brazilian jiu jitsu (bjj) coach and it's affecting my job.

The hives mainly come out while I'm working. Predominantly during bjj where I'm rolling and sparring to the point where I've had to stop which is far from ideal and not good for my business. It does come out while I pt clients but nowhere near as bad as when mentioned above.

Removing myself from this environment is not an option as it's my livelihood.

I have taken antihistamines and have been to the doctors on a few occasions and I'm currently taking 180mg of fexofenadine 2 a day

Can someone please help me with a homeopathy remedy