My RA really started in my feet. Ice and the right footwear is key.

I've had foot symptoms from time to time what helps is using Gold Bond foot cream and massage it in at night. It relaxes and stimulates blood flow to my feet. I hope you get some relief.

Check for Gout..I get that when my uric acid levels go up.

Use a podiatrist tubal foam over big toe with thick bit on bottom of foot.
I eat black cherries if I think my big toe has painful throb. Certainly clears it away.

Yes, the nerve pain is horrible. I have been using a Quell TENS unit and it has helped a lot.