Primary Neurologic Symptoms: Have You Considered Pernicious

J Emerg Med · Feb 2023

Case Reports

Primary Neurologic Symptoms: Have You Considered Pernicious Anemia?

Vitamin B12, or cobalamin, is a nutrient that is vital for metabolic function. Absorption of ingested B12 is dependent on intrinsic factor, which is secreted by parietal cells within the stomach. Pernicious anemia is caused by an intrinsic factor deficiency or autoantibodies against intrinsic factor. The presence of parietal cell antibodies can destroy parietal cells, which can also lead to a deficiency in intrinsic factor. Both lead to megaloblastic anemia caused by vitamin B12 deficiency. The typical presentation of pernicious anemia includes fatigue, pale appearance, tingling sensation, depression, alterations to vision and smell, urinary incontinence, psychotic episodes, and weakness. The most effective treatment for pernicious anemia is intramuscular B12. ⋯ A 27-year-old woman with a history of vitiligo presented to the emergency department (ED) with bilateral lower extremity weakness, clumsiness, numbness, and tingling. Physical examination revealed ataxia, no sensation below her umbilicus, decreased strength, and hyperreflexia in both lower extremities. Complete blood count in the ED revealed low hemoglobin and hematocrit and elevated mean corpuscular volume, concerning for pernicious anemia. Further laboratory testing upon inpatient admission revealed a low vitamin B12 level and parietal cell antibodies in the blood. The patient's pernicious anemia was treated with intramuscular vitamin B12 injections, which led to near complete resolution of her symptoms. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Early suspicion and detection of pernicious anemia in the ED can prevent serious and permanent hematologic and neurologic damage and the development of other autoimmune disorders.

explore further… or not…
- Andrew D Yocum, Mili Patel, Bradley Palocko, and Erin L Simon.
- Department of Emergency Medicine, Cleveland Clinic Akron General, Akron, Ohio; Northeast Ohio Medical University, Rootstown, Ohio.
- J Emerg Med. 2023 Feb 1; 64 (2): 217219217-219.
BackgroundVitamin B12, or cobalamin, is a nutrient that is vital for metabolic function. Absorption of ingested B12 is dependent on intrinsic factor, which is secreted by parietal cells within the stomach. Pernicious anemia is caused by an intrinsic factor deficiency or autoantibodies against intrinsic factor. The presence of parietal cell antibodies can destroy parietal cells, which can also lead to a deficiency in intrinsic factor. Both lead to megaloblastic anemia caused by vitamin B12 deficiency. The typical presentation of pernicious anemia includes fatigue, pale appearance, tingling sensation, depression, alterations to vision and smell, urinary incontinence, psychotic episodes, and weakness. The most effective treatment for pernicious anemia is intramuscular B12.Case ReportA 27-year-old woman with a history of vitiligo presented to the emergency department (ED) with bilateral lower extremity weakness, clumsiness, numbness, and tingling. Physical examination revealed ataxia, no sensation below her umbilicus, decreased strength, and hyperreflexia in both lower extremities. Complete blood count in the ED revealed low hemoglobin and hematocrit and elevated mean corpuscular volume, concerning for pernicious anemia. Further laboratory testing upon inpatient admission revealed a low vitamin B12 level and parietal cell antibodies in the blood. The patient's pernicious anemia was treated with intramuscular vitamin B12 injections, which led to near complete resolution of her symptoms. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Early suspicion and detection of pernicious anemia in the ED can prevent serious and permanent hematologic and neurologic damage and the development of other autoimmune disorders.Copyright © 2022 Elsevier Inc. All rights reserved.

Pubmed Copy Citation Plaintext

Add institutional full text...
Notes
Knowledge, pearl, summary or comment to share?

300 characters remaining

help

You can also include formatting, links, images and footnotes in your notes

Simple formatting can be added to notes, such as *italics*, _underline_ or **bold**.

Superscript can be denoted by <sup>text</sup> and subscript <sub>text</sub>.

Numbered or bulleted lists can be created using either numbered lines 1. 2. 3., hyphens - or asterisks *.

Links can be included with: [my link to pubmed](http://pubmed.com)

Images can be included with: ![alt text](https://bestmedicaljournal.com/study_graph.jpg "Image Title Text")

For footnotes use [^1](This is a footnote.) inline.

Or use an inline reference [^1] to refer to a longer footnote elseweher in the document [^1]: This is a long footnote..
hide…

Primary Neurologic Symptoms: Have You Considered Pernicious Anemia?

Notes

300 characters remaining

help

You can also include formatting, links, images and footnotes in your notes

What will the 'Medical Journal of You' look like?

Start your free 21 day trial now.