What is a common neurological finding in Vitamin B12 deficiency?

A positive Romberg test is a common neurological finding in Vitamin B12 deficiency, primarily because this deficiency can lead to neurological damage affecting proprioception and coordination. The Romberg test assesses a person's balance and proprioception skills by having them stand with their feet together and eyes closed. If they sway or fall, it indicates an issue with their sensory input, often linked to the loss of proper function in the dorsal columns of the spinal cord, which can be adversely affected by Vitamin B12 insufficiency. This is a direct consequence of the neurological impact of the deficiency, as Vitamin B12 is essential for maintaining the health of nerve cells.

In contrast, increased appetite, ocular fatigue, and loss of sense of taste are not typically associated with Vitamin B12 deficiency in a clinical or neurological sense. Increased appetite might occur due to other metabolic or psychological factors, ocular fatigue pertains more to visual strain than neurological function, and loss of taste is often linked to other vitamin deficiencies or conditions affecting the oral cavity rather than being a direct neurological manifestation of B12 deficiency.