Vitamin B12 Deficiency Without Anemia Presenting With Delayed Orthostatic Hypotension in an Adolescent: A Case Report.
Kenshin Tanaka, Shun Yamashita, Kota Minami, Yumi Harano, Masaki Tago
原始摘要（英文原文）· Original abstract
The orthostatic hypotension caused by vitamin B12 deficiency is extremely rare in young individuals. The serum vitamin B12 and anti-intrinsic factor antibody levels of young patients with orthostatic hypotension should be evaluated regardless of the presence of anemia, and vitamin B12 administration should be promptly initiated.