Yes it's all time and burning feet and shins..worse at night..oh permanent numbness in lower legs and feet past 5yr now..

My tendons do not burn they just hurt.

Yes under feet

I have and all they tell me is fibromyalgia, give me an anti depressant and send me on my way .

If it's a tendon have you torn or pulled one? I have a tare in one of the tendons in my shoulder and it stings and burns if I carry something that to heavy or have maybe over reached. You might talk with your doctor to see what's going on.