I agree with Bob, but want to add, that if you have an underlying disease, such as diabetes, or autoimmune issues, THOSE need treatment or control.

The PN is usually medicated with standard stuff like lyrica, neurontin, amitryptiline or whatever.

If you are 'lucky' enough to have a cause, well then, the 'cause' is treated, but, it isn't always successful in making the neuropathy go away. Maybe if you are lucky it arrests it.

Before you have idiopathic PN, you need PN. PN is highly likely to be found on skin biopsy done properly, or on autonomic tests, or EMG or some other test.

If all tests are negative, it is wise to look for other reasons of why you may not be feeling well.