If dizziness is due to a vitamin B12 deficiency, treatment usually involves replacing vitamin B12 with oral supplements or injections, depending on the severity of the deficiency. Most people feel better once B12 levels improve, but a doctor will confirm this with blood tests and guide the treatment.

Even with a normal CBC, symptoms such as weakness, leg pain, and poor sleep can be caused by vitamin D or B12 deficiency, electrolyte imbalance, stress, or nerve or muscle problems. A doctor may advise further blood tests and suggest treatments such as supplements, pain relievers, good hydration, regular sleep habits, and gentle exercise to help you feel better.