Originally Posted by mrsD

to ask your doctor.

Most (but not all) PNs are sensory. Once they become motor,
you need more aggressive medical advice.

Plasmapharesis is sometimes used to treat motor issues, if immune complexes are the cause.

Your weakness could also be a manifestation of type II diabetes. Muscle weakness is one symptom of increasing insulin resistance. Also your neck should be evaluated for any stenosis there.
Hereditary neuropathies may also affect motor functions.