--that's any sort of objective criteria at all.

It's certainly possible to have types of neuropathy that would enable you to tell them apart--you may have neuropathy involving other nerves than the ones that distinguish between mechanical touch stimuli (which is only one type of sensory nerve).

I've never had anything problematic with my mechanical touch receptors, but I certainly had a documented small-fiber neuropathy. It was my pain and temperature receptors that were damaged.

I wouldn't think a PT would be much of an expert on neuropathy anyway.