Vitamin B12 deficiency

external

• Synonyms

  • Cobalamin deficiency

• Causes

  • Decreased vitamin B12 intake
  • Vitamin B12 malabsorption
  • Increased vitamin B12 requirement
  • Metformin

• Effects

  • Megaloblastic anaemia
  • Subacute combined degeneration of spinal cord
  • Vitamin deficiency neuropathy
  • Large fibre neuropathy
  • Pancytopaenia
  • Geographic tongue
  • Homocysteinaemia
  • Methylmalonaturia
  • Optic neuropathy
  • Caecocentral scotoma
  • Anaemia of pregnancy

• Parents

  • Vitamin deficiency