there are many causes of anemia.
among them the most common are iron deficiency,chronic blood loss
,vit b12 & folic acid deficiency
in case of vitb12 deficiency peripheral neuropathy
may occurs which may causes pain in the hand & feet & other features.
it is easy to diagnose.
examination of peripheral blood film show megaloblastosis.
as there is history of vit b12 deficiency so it is better to exclude megaloblastic anemia