Medically reviewed by Brian T. Luong, DMD Anemia (a lack of healthy red blood cells) can produce a swollen and painful tongue ...
Glossitis, or inflammation of the tongue, is another warning sign of Vitamin B12 deficiency. Symptoms may include a swollen, reddened tongue that may feel sore or painful. Additionally ...
The mouth can reveal a lack of B12, according to the British Medical Journal. It said that symptoms such as glossitis, taste ...