Hello! After a careful review of your problem, I would like to have consultation with an eminent dermatologist!
Yes, this problem appears to be Hansen's neuropathy! which is many times missed by the doctors.
A progressive, long duration, painful polyneuropathy
with excluding diabetes
is definitely due to Hansen's disease meaning Leprosy
, especially borderline tuberculoid type of leprosy with intermittent episodes of lepra reactions when there is acute pain & swelling of the nerves & many times joints.
However, you need not worry at all as this disease is 100% curable with modern medications.
Thanks & wishing you early recovery!