How long is it supposed to it take for neuropathy to set in?

See below: Neuropathy is a term meaning a condition causing the nerves outside of the brain and spinal cord to malfunction. There are over 200 causes of peripheral neuropathy. Some are very fast in onset like guillain barre syndrome, others take years like neuropathy from diabetes or from drinking too much alchohol. Other causesinclude renal failure, autoimmune diseases and toxins. Chemotherapy drugs also.

Hours to years: Neuropathy is much more of a symptom than a disease, and the speed of onset is completely dependent on the underlying mechanism. While typical diabetic neuropathy can start causing symptoms of numbness only after years of progressive damage, guillian barre syndrome can lead to complete paralysis in a matter of hours.