Burning Pain in feet, ankles and legs

Help - have been experiencing this burning pain in my feet, ankles and legs for the past 2 weeks and it's extremely difficult to walk. What's making it even worse is that I already have been diagnosed years ago with Osteo-Arthritis, Fibramyalgia & Polymyalgia Rheumatica (PMR).

Someone mentioned that the moderate low-back pain I've been having lately could be the cause!? Any help or advice would be appreciated.......

Suffering in Orlando

I can only tell you about my symptoms and what the drs say the cause is. I'm also having burning pain in legs and feet. At first, it started as tingling and now worked to burning stabbing pain. But it started in mid thigh and worked it's way down over months. Complete leg feels like its in a vice grip and makes it very painful to walk. So far, my diagnosis is nerve compression at L5 and nothing can be done. I will not accept that yet and I'm seeking other opinions. i hope you get answers soon!!