I tend to avoid doctors unless there is a non-toxic useful service they can provide for me. I tend to avoid toxic drugs, habit forming drugs, and invasive procedures unless they are life saving at the time. Over the years I've found many ways to handle my "problems"... the most expensive turns out to be the Lidoderm patches, the least expensive, the magnets.

One thing you can try, is an elimination diet. Excluding the most common triggers, one at a time.
If you find one for yourself, you yourself will have to do the dietary changes-- no doctor needed for this one!

I'd start with gluten, since it is the most statistically common factor in neuropathies.

Then the nightshade family (tomatoes, potatoes, eggplant and peppers).

Then the lily family (garlic, onions). but I think this one is less common.

Avoid MSG at all costs (it can cause burning).

Others that can cause food intolerances... dairy, corn, soy, chocolate.
A friend of my son's in high school went deaf from corn! Her parents did some allergy testing for her when she was in grade school, and the corn link was discovered. She did regain some hearing by eliminating it from her diet...and she was able to hear a bit with hearing aids finally. She made great progress in fact, and it is a severe lesson, that people can have some allergy that inflames their nerves, or in her case almost killed her auditory nerves!

I guess in your age group, looking for paraneoplastic causes of PN is worth a doctor's visit. Tumors that are hidden in the lung or ovary and some other tissues, may cause neuropathy. Also the MGUS tests should get measured, as they may rise as we age and signal some bone marrow problems and ultimately myeloma.

How much you want to do the standard testing, is up to you.
In your age group you may find pain management more easily offered to you. Younger patients, often are not given narcotics as easily. If you decide to do opiates, start as low as you can.
Constipation issues are harder on older patients, and can be very uncomfortable in themselves.

Neuropathy can be self-limiting, and wane on its own. It can be a freak thing because of some trigger (which may be gone). Use of some supplements may hasten this recovery.