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Updated: May 18, 2026

A Point-of-Care Method with Integrated Decision Support Tool to Estimate Anemia at Population Level
Published on: January 19, 2024
Optimal management of pernicious anemia
Emmanuel Andres1, Khalid Serraj
1Department of Internal Medicine, Diabetes, and Metabolic Disorders, University Hospital of Strasbourg, Strasbourg, France ; Competence Center of Autoimmune Cytopenias in Adults, University Hospital of Strasbourg, Strasbourg, France.
Pernicious anemia is an autoimmune condition causing vitamin B12 deficiency due to malabsorption. Early diagnosis is crucial for managing its diverse neurological and hematological symptoms.
Area of Science:
- Gastroenterology
- Hematology
- Immunology
Background:
- Pernicious anemia, an autoimmune atrophic gastritis, leads to vitamin B12 malabsorption.
- It affects 0.1% of the general population, rising to 1.9% in those over 60.
- This condition accounts for 20%-50% of adult vitamin B12 deficiency cases.
Purpose of the Study:
- To provide an update on pernicious anemia, emphasizing clinical relevance.
- To discuss diagnosis, manifestations, and treatment of this condition.
- To highlight the importance of considering pernicious anemia in unexplained neurological and hematological symptoms.
Main Methods:
- Review of current clinical data and research on pernicious anemia.
- Discussion of diagnostic markers, including anti-intrinsic factor antibodies.
- Analysis of treatment strategies, focusing on parenteral vitamin B12 administration.
Main Results:
- Pernicious anemia presents with diverse clinical manifestations, often mimicking other conditions.
- Diagnosis requires a high index of suspicion, especially with unexplained neurological or hematological issues.
- Anti-intrinsic factor antibodies are a key biological marker.
Conclusions:
- Pernicious anemia is a significant cause of vitamin B12 deficiency with varied presentations.
- Prompt diagnosis and appropriate treatment, primarily parenteral vitamin B12, are essential.
- Ongoing research explores alternative administration routes for vitamin B12.
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