lailavia, the skin punch biopsy will not show them the cause of your problem, it will only show them the nerve density [how much fibre damage] but you have been telling this all along with your symptoms, you previously mentioned that you had " some loss of temperature sensation " your small fibre's job is to send the correct temperature signals to your brain, when they are damaged they don't send the correct signals, they send like scrambled or confused messages,

This solely my opinion only, but i think that if the nerve's are already damaged and are struggling to send proper signals to the brain, so why go cutting them around when they are showing damage already, may be possibly good for comparison reasons over time but then you know if your getting better or worse anyway, just doesn't make to much sense to me.

I am sure you won't get thrown into a physc ward , you cracked me up when i read that, don't worry i had some real idiots first up, once a neuro who had just done a nerve conduction test on me actually said to me " i don't think your got burning feet " the NC test's says so, mind you, whilst i am sitting there with my feet were on fire , i won't say what i said but he took off pretty quick , a nerve conduction tests doesn't test for small nerves only large one's, just shows you how SOME neuro's can be completely useless when it comes to PN.
good luck anyway,
Brian