Hi Snikerdudl

I have had these symptoms too, although not very badly. It seem that erythromelalgia is not well understood but some experts think it may be related to or associated with PN. Here are some refs:

http://preview.tinyurl.com/2gqp84
http://preview.tinyurl.com/2ck5zo
http://preview.tinyurl.com/3ctux7
http://preview.tinyurl.com/2u6wte

Regards

Martin