Eight years ago I took a step down and landed on my left heel. It felt like an electric shock going through my body from foot to head. Two days later I couldn’t straighten out my left knee without terrible pain. Had two epidurals and that was gone. Then about 4 to 6 weeks later I started getting tingling in my lower legs and feet. Left leg worse but the right one is catching up. When I am on my feet I hardly know I have it. But when I change planes it starts up again before mostly fading. Going to bed at night is generally terrible but again it fades. Sometimes they feel like they are wrapped tightly. The skin down there feels fairly numb. Down south a few years ago I got bitten by five fire ants on my ankle. No reaction, itching, or festering.
Very unusual if you’ve ever had a bite by one. My back hasn’t been very good for 40 years but it’s a minor problem compared to this