You know, it is a terrible thought, but severe PN in a person like this progressing rapidly, could be paraneoplastic.
Certain cancers cause PN like this.
Has he had a chest Xray?
http://www.uptodate.com/contents/par...rve-and-muscle
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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