
A case of vitamin B12 allergy is reported. Typical eczematous and exanthematic skin lesions appeared after long-term and high-dosed intake of a vitamin B12 drug (Biovital). Patch tests with vitamin B12 were positive. This observation of vitamin B12 allergy we compared with previous published cases.
Male, Chemical Phenomena, Urticaria, Eczema, Nausea, Middle Aged, Long-Term Care, Drug Hypersensitivity, Chemistry, Vitamin B 12, Humans, Female, Drug Eruptions, Anaphylaxis
Male, Chemical Phenomena, Urticaria, Eczema, Nausea, Middle Aged, Long-Term Care, Drug Hypersensitivity, Chemistry, Vitamin B 12, Humans, Female, Drug Eruptions, Anaphylaxis
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