MeSH Browser

MeSH Heading: Vitamin B 12 Deficiency
Tree Number(s): C18.654.521.500.133.699.923
Unique ID: D014806
RDF Unique Identifier: http://id.nlm.nih.gov/mesh/D014806
Annotation: coord IM with specific B 12 vitamin /‌defic (IM)
Scope Note: A nutritional condition produced by a deficiency of VITAMIN B 12 in the diet, characterized by megaloblastic anemia. Since vitamin B 12 is not present in plants, humans have obtained their supply from animal products, from multivitamin supplements in the form of pills, and as additives to food preparations. A wide variety of neuropsychiatric abnormalities is also seen in vitamin B 12 deficiency and appears to be due to an undefined defect involving myelin synthesis. (From Cecil Textbook of Medicine, 19th ed, p848)
Entry Version: VITAMIN B 12 DEFIC
Entry Term(s): Deficiency, Vitamin B 12; Deficiency, Vitamin B12; Vitamin B12 Deficiency
NLM Classification #: QU 194
Date Established: 1966/01/01
Date of Entry: 1999/01/01
Revision Date: 2003/07/09

Allowable Qualifiers: blood (BL)

cerebrospinal fluid (CF)

chemically induced (CI)

classification (CL)

complications (CO)

congenital (CN)

diagnosis (DI)

diagnostic imaging (DG)

diet therapy (DH)

drug therapy (DT)

economics (EC)

embryology (EM)

enzymology (EN)

epidemiology (EP)

ethnology (EH)

etiology (ET)

genetics (GE)

history (HI)

immunology (IM)

metabolism (ME)

microbiology (MI)

mortality (MO)

nursing (NU)

parasitology (PS)

pathology (PA)

physiopathology (PP)

prevention & control (PC)

psychology (PX)

radiotherapy (RT)

rehabilitation (RH)

surgery (SU)

therapy (TH)

urine (UR)

veterinary (VE)

virology (VI)

Concept UI: M0022796
Scope Note: A nutritional condition produced by a deficiency of VITAMIN B 12 in the diet, characterized by megaloblastic anemia. Since vitamin B 12 is not present in plants, humans have obtained their supply from animal products, from multivitamin supplements in the form of pills, and as additives to food preparations. A wide variety of neuropsychiatric abnormalities is also seen in vitamin B 12 deficiency and appears to be due to an undefined defect involving myelin synthesis. (From Cecil Textbook of Medicine, 19th ed, p848)
Terms: Vitamin B 12 Deficiency Preferred Term
Term UI T043293
Date01/01/1999
LexicalTag NON
ThesaurusID NLM (1966); Deficiency, Vitamin B 12
Term UI T043292
Date06/19/1991
LexicalTag NON
ThesaurusID NLM (1992); Deficiency, Vitamin B12
Term UI T043294
Date08/18/1988
LexicalTag NON
ThesaurusID UNK (19XX); Vitamin B12 Deficiency
Term UI T043295
Date08/18/1988
LexicalTag NON
ThesaurusID UNK (19XX)

Vitamin B 12 Deficiency MeSH Descriptor Data 2024