--Crohn's is known to be associated with neuropathy, although researchers are not quite sure whether there is an autoimmune cross-reactivity at work of whether it may have more to do with nutritional deficiencies that Crohn's people are prone to.

http://neurology.org/content/37/8/1414.abstract

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1978494/

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