Other causes of vitamin B 12 deficiency Other causes of vitamin B 12 deficiency include surgical resection of the stomach or portions of the small intestine where receptors for the IF-B 12 complex are located
Graphical Abstract 1 Introduction Neurological conditions, including central nervous system (CNS) disorders, have emerged as the leading cause of illness and disability worldwide, affecting more than 3 billion individuals more than one-third of the global population based on a study in 2021 (GBD, 2021 Nervous System Disorders Collaborators, 2024)
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According to product information, hypersensitivity reactions are classified as uncommon (affecting less than 1 in 100 people), while anaphylaxis is rare (affecting less than 1 in 1,000 people)
While mild, transient burning is generally benign, certain signs and symptoms warrant prompt medical evaluation
Begin a daily non-sedating antihistamine