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Vitamin B12 deficiency: an unusual cause of vocal fold palsy
The Journal of Laryngology & Otology, 11/23/2011
Green R et al. – This is the first reported case of unilateral vocal fold palsy secondary to vitamin B12 deficiency. Central and peripheral neuropathies have been described; however, other than the optic nerve, the cranial nerves are very rarely affected. It is important to consider vitamin B12 deficiency as a cause, as speedy identification and treatment can help prevent permanent neurological damage.