PT - JOURNAL ARTICLE AU - Sumant Biyani AU - Sneh Kumar Jha AU - Suchit Pandey AU - Rakesh Shukla TI - Acute bilateral useless hand syndrome: a rare presenting manifestation of vitamin B<sub>12</sub> deficiency AID - 10.1136/bcr-2015-210067 DP - 2015 Oct 16 TA - BMJ Case Reports PG - bcr2015210067 VI - 2015 4099 - http://casereports.bmj.com/content/2015/bcr-2015-210067.short 4100 - http://casereports.bmj.com/content/2015/bcr-2015-210067.full AB - We report a case of bilateral useless hand syndrome, a rare presenting manifestation of vitamin B12 deficiency. A 38-year-old man, a strict vegetarian and a teacher by occupation, presented with acute onset clumsiness of both hands while performing fine movements. Detailed history-taking, examination of the patient and relevant investigations (complete blood count, serum vitamin B12 and MRI of the cervical spinal cord) were carried out. Laboratory analysis was suggestive of vitamin B12 deficiency and MRI demonstrated a lesion involving the posterior columns of the cervical cord. The patient was diagnosed as a case of non-compressive cervical myelopathy predominantly involving the posterior column due to vitamin B12 deficiency. Acute bilateral useless hand syndrome can be a rare presenting feature of vitamin B12 deficiency.