Pseudo-Orthostatic Tremor as a Manifestation of Vitamin B12 Deficiency: A Case Report

Vitamin B12 deficiency has long been known to present with various neurological manifestations, but only rarely presents as movement disorders, especially in adults. We present the case of a 30-year-old vegan male presenting with tremors on both legs when standing which was relieved by vitamin B12 supplementation. To the best of our knowledge, this is the first documented case of slow orthostatic tremor or pseudo-orthostatic tremor caused by vitamin B12 deficiency. Key words: Vitamin B12 Deficiency, Cobalamin, Vegan, Movement Disorders, Tremor, Orthostatic Tremor, Shaky-leg Syndrome, Electromyography