Vitamin B12 deficiency: Symptoms include paraesthesia or pins and needles

Vitamin B12 deficiency: Symptoms include paraesthesia or pins and needles

The clinical signs and further tests made experts believe that the man suffered from a “profound” vitamin B12 deficiency. If this man’s case isn’t scary enough for you, the Harvard Medical School warns “it could have been worse”. vitamin B12 deficiency can lead to deep depression, paranoia and delusions, memory loss, incontinence, loss of taste and smell, and more,” the health school adds. The tricky part of vitamin B12 deficiency is the volume of symptoms you need to be aware of. of.