​Vitamin B12 deficiency, while commonly associated with fatigue and weakness, can manifest in a variety of unusual and unexpected ways that often go unnoticed or are misattributed to other causes. Despite its essential role in maintaining nerve function, producing red blood cells, and supporting DNA synthesis, the symptoms of B12 deficiency can be subtle and diverse, making it challenging to diagnose. Here are a few lesser-known signs and symptoms of Vitamin B12 deficiency, shedding light on the importance of recognizing and addressing this condition promptly.​