Although diabetes is still the most common cause of numbness (neuropathy) to the feet, it is not the only cause.  There are actually close to 100 causes of neuropathy with diabetes only being one.  Diabetes is one of the causes that should always be evalauted.  For more information on numbness, see our Neuropathy page.
Brandt R Gibson, DPM
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Podiatrist, Neuropathy Doctor, Father of 11 and Founder of Mountain West Foot & Ankle Institute