2459 results
Folate Deficiency - Causes of Decreased Folic Acid
↓ Intake: Diet, Age, Alcohol
↑ Demand: Pregnancy, Infancy, Hemolysis,
Folate Deficiency ... Severe dermatitis ↓ Absorption ... drkeithsiau #Folate #Deficiency ... #FolicAcid #differential
Causes of Iron Deficiency
 • Diet: ↓ Intake, e.g. vegan, Malnutrition, Polyphenol / tannins, ↓ Vitamin
Causes of Iron Deficiency ... Vitamin C • ↓ Absorption ... drkeithsiau #Iron #Deficiency ... #Causes #differential
Causes of Iron Deficiency
 • Inadequate Intake: Vegetarian/vegan diet, Malnutrition
 • Increased Body Needs: Infants/preschoolers, Pregnancy,
Causes of Iron Deficiency ... Steroids • Reduced absorption ... cancer) #Iron #Deficiency ... #differential #
Causes of Hypermagnesemia
Increased magnesium load
 - Magnesium-containing laxatives, antacids, or enemas
 - Treatment of pre-edampsia/eclampsia (mothers
renal magnesium absorption ... Mineralocorticoid deficiency ... Causes #diagnosis #differential
Hyperphosphatemia - Differential Diagnosis Algorithm
Transcellular Shift:
 • Rhabdomyolysis
 • Tumor Lysis
 • Metabolic or Respiratory Acidosis
Hyperphosphatemia - Differential ... Acidosis • Insulin Deficiency ... Increased Intake / Absorption ... HighPhosphate #Differential
Causes of B12 deficiency. 

This great diagram shows normal absorption and outlines most possible causes. At
Causes of B12 deficiency ... diagram shows normal absorption ... the top is a B12-deficient ... #VitaminB12 #deficiency ... #Differential #
Hypophosphatemia - Differential Diagnosis Algorithm
Appropriately Low Kidney Phosphate Excretion:
 • Decreased GI Absorption: Chronic Diarrhea, Antacids,
Hypophosphatemia - Differential ... • Decreased GI Absorption ... Binders, Vitamin D Deficiency ... Vitamin D: Vit D Deficiency ... Hypophosphatemia #Differential
Copper Deficiency - Mechanisms
There are 2 main mechanisms of copper deficiency
Decreased intake from:
 - Gastric bypass,
Copper Deficiency ... mechanisms of copper deficiency ... Celiac which reduce absorption ... UTSWIMchief #Copper #Deficiency ... #Causes #differential
Causes of Copper Deficiency - Differential Diagnosis
Hereditary: 
 - Menkes disease, familial hypoceruloplasminemia
Decreased / Inadequate Intake:
Causes of Copper Deficiency ... - Differential ... or inadequate absorption ... supplements #Copper #Deficiency ... #Differential #
Workup for Hypophosphatemia - Differential Diagnosis Framework
Rule out spurious hypophosphatemia: paraproteinemia, acute leukemia
Measure Urine Fractional Excretion
Hypophosphatemia - Differential ... diarrhea, Poor absorption ... Niacin, Vitamin D deficiency ... hyperparathyroidism, Vitamin D deficiency ... Hypophosphatemia #Differential