SO means "significant other" and the man who has PN is my "significant other's" father. So, he's basically my father-in-law (or, FIL). I know he's been thru a ZILLION tests for a ZILLION different diseases. I'd "assume" that diabetes was the very first thing they tested him for. I know he's had a bunch of mri's and emg's and doppler's as well...but I'm not sure of the results. I'll have to get more info. We did not see them this weekend. His wife (my MIL) had to be taken back to the hospital this weekend for complications from her back surgery - everything is fine, but he was so exhausted from taking care of her that we didn't want to bother them so we stayed home. I will ask further questions this week.

Thank you all.