PsychEducation.org (home)

B-12 Deficiency Symptoms

Vitamin B12 deficiency symptoms include:

• Loss of appetite

• Diarrhea

• Numbness and tingling of hands and feet

• Paleness

• Shortness of breath

• Fatigue (this is due primarily to the anemia)

• Weakness (this is due primarily to the anemia)

• Sore mouth and tongue

• Confusion or change in mental status in severe or advanced cases. This is sometimes confused with dementia.