[Table/Fig-1]:

Dyck’s grading system used for staging severity of diabetic peripheral neuropathy.

Stage	Evidence DPN
N0	N0 objective evidence of DN
N1	Asymptomatic polyneuropathy N1a: No symptoms or signs but neuropathic test abnormalities N1b: Test abnormalities* plus neuropathy impairment on neurological exam
N2	Symptomatic neuropathy N2a: Symptoms, signs, and test abnormality N2b: N2a plus significant ankle dorsiflexor weakness
N3	Disabling polyneuropathy

* Electrophysiological Abnormalities