It is true that DM nephropathy develops only 5-6 yrs after diabetes
but you might have had DM for the past 5-6 years without being diagnosed since in many cases DM type II is asymptomatic. So the neuropathy is an accurate diagnosis for you. Also Type II DM is not genetically inherited. It is an acquired condition arising due to the resistance of the insulin
receptors to insulin. Laser therapy
is not yet approved as a treatment for neuropathy.
All the best.