Newbie introduction

Hi Steve,

Welcome to the forum.

I personally do not get pins and needles in my lower back and upper legs, but those symptoms you are describing could be Sciatica, though I am no doctor or therapist, just a thought.

Thanks

Welcome Steve
There are many possibilities for the cause of your discomfort, sciatica or peripheral neuropathy brought on by your diabetes are just a couple but.
No one here is qualified to give medical advice if you are at all concerned by your symptoms, a visit to your Dr would be your best course of action.
I thought this might be useful from Dr Google https://spinecenterbr.com/numbness-and-tingling-when-to-worry/ don't let it freak you out though, it lists just about every ailment known to man.