However, it may also affect other parts of your body, like your legs, neck or arms
Prescription and administration: Once B12 deficiency is confirmed, GPs prescribe hydroxocobalamin injections according to standardised protocols: Standard loading regimen: 1mg intramuscularly three times weekly for two weeks Neurological involvement: 1mg intramuscularly on alternate days until no further improvement Maintenance therapy: 1mg every three months for life in pernicious anaemia or malabsorption conditions (or every two months if there was neurological involvement) Injections are typically administered by practice nurses at GP surgeries
Doctors may diagnose the cause of numbness in the arm by carrying out a physical examination, medical imaging, and, if necessary, blood or urine tests
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The dosage and duration of therapy should be individualized by the physician according to the patients response and underlying cause of deficiency