Yes, mine was diagnosed with a skin biopsy

Just an FYI...."Is small fiber neuropathy the same as peripheral neuropathy? -- Small fiber neuropathy is considered a form of peripheral neuropathy because it affects the peripheral nervous system, which connects the brain and spinal cord to muscles and to cells that detect sensations such as touch, smell, and pain." --
Small fiber neuropathy: MedlinePlus Genetics: https://medlineplus.gov/genetics/condition/small-fiber-neuropathy/

You are correct, the skin punch biopsy is the gold standard for diagnosing small fiber neuropathy but sometimes it takes a village approach. My neurologist could have done a punch biopsy but I'm quite happy with the diagnosis. May not be a big deal but if I have nerve damage why would I want to have a punch biopys which by definition is going to remove some good nerves along with some damaged ones to see how bad it is. Just my thoughts.

Wow, this neurologist stated it as fact: "EEG identifies sfn". End of story. Go see a rheumatologist.

To the extent that they are separate diseases, your comment strongly suggests that Small Fiber Neuropathy ought to be a separate group from Neuropathy on this platform.