Not all of these symptoms need to be present for a diagnosis of vitamin B-12 deficiency – in fact, many people only have two or three. If you suspect you have vitamin B-12 deficiency, ask your doctor for a blood and urine test – blood levels may not be accurate in all cases.
- Numbness or tingling in the hands and feet.
- Problems coordinating your body movements (ataxia).
- Impaired reflexes.
- Problems walking (gait disturbances).
- Impaired vibration perception.
- Closing your eyes makes you very unsteady (positive Romberg’s test).
- Extending your big toe while curling the rest when your sole is tickled (Babinski’s sign).
- Sudden electricity-like shocks down the spine when moving your head.
- Degraded vision (optic nerve damage).
- Difficulty concentrating.
- Impaired memory / memory loss.
- Major personality changes.
- Difficulty breathing during exertion.
- Aversion to meat (the only significant dietary source of vitamin B12).
- Incontinence / loss of bladder control.
- White patches of skin (vitiligo).
- Hair loss.