Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Symptoms of B12 deficiency ordered from the most to the least difficult for being linked to B12 deficiency. Although neuropsychiatric symptoms are more frequent than hematological abnormalities, they are less specific, more demanding to recognize, and thus more difficult to link to B12 deficiency.
