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  2. Vitamin B12 deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_B12_deficiency

    Vitamin B 12 deficiency can be determined, but not always. [14] This means it measures forms of vitamin B 12 that are "active" and can be used by the body, as well as the "inactive" forms, which cannot. [151] Vitamin B 12 deficiency can be found within normal levels, so clinical symptoms should be taken into account when a diagnosis is made. [2]

  3. Pernicious anemia - Wikipedia

    en.wikipedia.org/wiki/Pernicious_anemia

    Neuropsychiatric symptoms can precede hematological signs and are often the presenting manifestation of the disease. [55] Vitamin B 12 serum levels are used to detect its deficiency, but do not distinguish its causes. Vitamin B 12 levels can be falsely high or low and data for sensitivity and specificity vary widely.

  4. Subacute combined degeneration of spinal cord - Wikipedia

    en.wikipedia.org/wiki/Subacute_combined...

    Administration of nitrous oxide anesthesia can precipitate subacute combined degeneration in people with subclinical vitamin B 12 deficiency, while chronic nitrous oxide exposure can cause it even in persons with normal B 12 levels. Posterior column dysfunction decreases vibratory sensation and proprioception (joint sense).

  5. These High-Quality Vitamin B12 Supplements Can Help ... - AOL

    www.aol.com/lifestyle/high-quality-vitamin-b12...

    Over time, a deficiency of B12 can cause problems with balance, confusion, depression, poor memory and possibly dementia, and it can even cause permanent damage to the nervous system, Somers says.

  6. Vitamin B12 deficiency: what is pernicious anaemia, and why ...

    www.aol.com/news/vitamin-b12-deficiency...

    Pernicious anaemia is a lifelong condition that affects nearly 5 in 100,000 people in the UK.

  7. This vitamin deficiency can cause forgetfulness and mimic ...

    www.aol.com/finance/vitamin-deficiency-cause...

    Once you get an evaluation, a doctor will usually order a blood test to check for a vitamin B12 deficiency, along with other potential factors that could cause dementia-like symptoms, Sachdev says.

  8. Hydroxocobalamin - Wikipedia

    en.wikipedia.org/wiki/Hydroxocobalamin

    The blind loop syndrome may produce deficiency of vitamin B 12 or folate. Inadequate use of vitamin B 12, which may occur if antimetabolites for the vitamin are employed in the treatment of neoplasia; Pernicious anemia is the most common cause of vitamin B 12 deficiency. [17]

  9. Vitamin B12 - Wikipedia

    en.wikipedia.org/wiki/Vitamin_B12

    [6] [15] [26] Vitamin B 12 deficiency can also cause symptoms of mania and psychosis. [27] [28] Among other problems, weakened immunity, reduced fertility and interruption of blood circulation in women may occur. [29] The main type of vitamin B12 deficiency anemia is pernicious anemia, [30] characterized by a triad of symptoms: