Once it is determine that a neuropathy is the problem, the cause can be determine with also the history and the exam, the EMG-NCV, and blood work.
Diabetic neuropathy is a very common cause, however there are multiple causes of
neuropathy, such as inflammatory conditions, vascular conditions, infectious disorders, kidney disease, exposure to drugs or toxins, or other metabolic conditions. Finding the cause is important, in order to treat the problem, but many times the cause is not determined.