are temporary. You may be injured by something, and then need to heal.

Others are progressive like the autoimmune ones.

Some autoimmune ones are connected to food intolerances...like gluten.
Others are connected to viral insults.

Some are genetic..

Some are metabolic (low thyroid, and diabetes)

Some are connected to vitamin deficiencies. And may respond to Thiamine (B1) and/or methylcobalamin B12 and Folic acid

Some are due to a cancer that may be hidden somewhere in your body.
(paraneoplastic neuropathy)

Some may be due to chemotherapy for cancer using potent drugs.
AIDs drugs also cause neuropathy.

So some investigating may help you heal. And other investigations may just reveal causes, that cannot be treated.

Neuropathy is a confusing set of symptoms and one label/treatment does not fit all.