Symptoms of vitamin B12 deficiency Home
- - Depression or mood impairment
- - Irritability
- - Pale skin
- - Numbness or tingling
- - Constipation, diarrhea, loss of appetite, or gas
- - Heart palpitations
- - Disturbed vision
- - Dementia
- - Sore, red tongue
- - Problems walking
- - A lack of energy or lethargy
- - Extrapyramidal signs (eg, dystonia, dysarthria, rigidity