20 results
Causes of Vitamin B12 Deficiency - Cobalamin
Decreased Intake
Pancreas: Insufficiency
Intestine: SIBO, Celiac disease, IBD, Lymphoma, Amyloidosis, Resection,
Causes of Vitamin ... B12 Deficiency ... Intestine: SIBO, Celiac ... #B12 #Deficiency ... #Cobalamin #differential
Causes of Low Vitamin B12 Levels
Low vitamin B12 intake - Vegetarianism, chronic alcoholism and older people
Autoimmune
Causes of Low Vitamin ... B12 Levels Low ... vitamin B12 intake ... Crohn 's disease, coeliac ... #differential #
Causes of Iron Deficiency
 • Diet: ↓ Intake, e.g. vegan, Malnutrition, Polyphenol / tannins, ↓ Vitamin
Causes of Iron Deficiency ... Drugs, H pylori, Celiac ... Inflammation: IBD ... #Deficiency #Causes ... #differential #
Chronic Diarrhea Differential Diagnosis
 • Inflammatory, Infectious: Recurrent C. diff, Giardiasis
 • Inflammatory, Non-infectious: IBD, Ischemia,
Chronic Diarrhea ... Non-infectious: IBD ... Bacterial overgrowth, Celiac ... #Diagnosis #causes ... #gastroenterology
Suspected Celiac Disease - Diagnosis Algorithm

Celiac disease suspected:
 • Signs and symptoms of celiac disease
 •
disease • Iron-deficiency ... without discernable cause ... microscopic colitis Differential ... Inflammatory (IBD ... Diagnosis #Algorithm #gastroenterology
Vitamin B12 (Cobalamin) Deficiency
Etiology:
 • Vit B12 - aka cobalamin. Present in foods derived from animal
Vitamin B12 (Cobalamin ... • Common Causes ... pain, diarrhea ... celiac disease, ... #B12 #Cobalamin
Causes of Iron Deficiency
 • Inadequate Intake: Vegetarian/vegan diet, Malnutrition
 • Increased Body Needs: Infants/preschoolers, Pregnancy,
Causes of Iron Deficiency ... Bleeding, Edema, Celiac ... Inflammatory Disease (IBD ... , cancer) #Iron ... #Deficiency #differential
Causes of Iron Deficiency - Differential Diagnosis Algorithm
 • Blood loss: GI (cancer, ulcer, IBD), GU
Causes of Iron Deficiency ... - Differential ... cancer, ulcer, IBD ... of absorption): Celiac ... #Deficiency #Differential
Causes of Thrombocytosis - Differential Diagnosis Algorithm
Spurious:
 • Artifact (redo CBC)
Autonomous:
 • Essential thrombocytosis
 • Polycythemia
- Differential ... Inflammatory: • IBD ... disorders • Celiac ... malignancy • Iron ... deficiency anemia
5 D's Mnemonic for Causes of Iron Deficiency Anemia (IDA)
Diet - lacking iron, vitamin C, too
of Iron Deficiency ... , vitamin C, too ... Decreased Absorption - Diarrhea ... , Celiac, autoimmune ... #Causes