The symptoms of vitamin B12 deficiency can vary amongst individuals, depending on the cause, the severity of B12 deficiency and other factors.
Symptoms of vitamin B12 deficiency include very pale skin, shortness of breath, fatigue, dizziness, headache cold hands and feet, heart palpitations, and chest pain. These symptoms are due to a decreased production of red blood cells that are necessary to carry vital oxygen to the body's cells and tissues. A serious complication that can occur due to decreased red blood cell production is pernicious anemia, also called vitamin B12 deficiency anemia.
Vitamin B12 deficiency and vitamin B12 deficiency anemia can also affect the gastrointestinal tract and result in enlarged liver (hepatomegaly), nausea, vomiting, heartburn, abdominal bloating, gas, constipation or diarrhea, loss of appetite, and weight loss.
Symptoms can also occur in the nervous system. If left untreated, vitamin B12 deficiency can result in permanent nerve damage. Symptoms can include numbness and tingling in the hands and feet, unsteadiness, difficulty walking, confusion, depression, memory loss, and dementia....more about Vitamin B12 Deficiency »
The list of signs and symptoms mentioned in various sources for Vitamin B12 Deficiency includes the 51 symptoms listed below:
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The list of other diseases or medical conditions that may be on the differential diagnosis list of alternative diagnoses for Vitamin B12 Deficiency includes:
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Click on any of the symptoms below to see a full list of other causes including diseases, medical conditions, toxins, drug interactions, or drug side effect causes of that symptom.
When considering symptoms of Vitamin B12 Deficiency, it is also important to consider Vitamin B12 Deficiency as a possible cause of other medical conditions. The Disease Database lists the following medical conditions that Vitamin B12 Deficiency may cause:
These general reference articles may be of interest in relation to medical signs and symptoms of disease in general:
Full list of premium articles on symptoms and diagnosis
The symptom information on this page attempts to provide a list of some possible signs and symptoms of Vitamin B12 Deficiency. This signs and symptoms information for Vitamin B12 Deficiency has been gathered from various sources, may not be fully accurate, and may not be the full list of Vitamin B12 Deficiency signs or Vitamin B12 Deficiency symptoms. Furthermore, signs and symptoms of Vitamin B12 Deficiency may vary on an individual basis for each patient. Only your doctor can provide adequate diagnosis of any signs or symptoms and whether they are indeed Vitamin B12 Deficiency symptoms.
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