Vitamin B12 Deficiency

<Presentations>

<Index>

 

Definition

-  Deficiency of Vitamin B12 (Cobalamin)

 

Features

-   

 

Presentations

-  Megaloblastic anaemia

-  Peripheral neuropathy: posterior & lateral colums of cord

-  Optic nerve atrophy

 

Causes

-  Bowel resection

-  Pernicious anaemia

-  IBD esp Crohns disease

-  Metformin