Lockjaw occurs when chewing muscles spasm, restricting the opening of the mouth. Diagnosis may involve a physical exam, blood tests, and imaging like CT scans or MRIs. Mild cases of lockjaw can be ...
Cracked or dry lips is one potential sign of a vitamin B12 deficiency. Vitamin B12 (cobalamin) helps your body build and renew healthy cells and tissue. Since the cells in your mouth grow and replace ...