Challenges in the identification of cobalamin-deficiency polyneuropathy.


BACKGROUND Diagnosing cobalamin (Cbl) deficiency as a cause of polyneuropathy (PN) is problematic, as the frequency of both disorders increases with age, and serum Cbl levels can be difficult to interpret. OBJECTIVES To identify unique clinical or laboratory features among PN patients with Cbl deficiency and to examine the role of testing of serum… (More)


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