Maybe PN
 

I'm not sure what it is that I have but for 6 months I've had trouble sleeping due to problems with my feet and hands well the soles and parms burning
Dr did lots of blood tests and nothing showed wanted me to see a Neurologist
I said no due to my last Neuro never really helped with my main problem of
Myasthenia Gravis but I'm finding it differcult walking my balance is bad even just standing still.
for the last few years I've had burning in both my knees after seeing a Dr and having many tests I was told nothing could be done I'm now waiting to see a new Neuro and maybe find some answers