Related Experiment Videos
[Vitamin B 12-(cyanocobalamin)-allergy]
Summary
A rare vitamin B12 allergy caused skin lesions in a patient after prolonged, high-dose use of a vitamin B12 supplement. Positive patch tests confirmed the allergy, highlighting a potential adverse reaction to vitamin B12 intake.
Area of Science:
- Allergy and Immunology
- Dermatology
- Clinical Pharmacology
Context:
- Vitamin B12 is essential for neurological function and hematopoiesis.
- Adverse reactions to vitamin B12 are uncommon but can occur.
- High-dose and long-term supplementation may increase the risk of sensitization.
Purpose:
- To report a case of suspected vitamin B12 allergy.
- To document the clinical presentation and diagnostic findings.
- To compare this case with previously reported instances of vitamin B12 allergy.
Summary:
- A patient developed eczematous and exanthematic skin lesions following long-term, high-dose intake of a vitamin B12 preparation (Biovital).
- Diagnostic evaluation included patch testing, which yielded positive results for vitamin B12.
- The clinical findings and diagnostic outcomes were consistent with an allergic reaction to vitamin B12.
Impact:
- This case underscores the possibility of vitamin B12 allergy, even with commonly used supplements.
- It emphasizes the importance of considering drug allergies in patients presenting with unexplained dermatological symptoms.
- Further investigation into the mechanisms and prevalence of vitamin B12 allergy may be warranted.