5800 results
Tinea Versicolor (Pityriasis versicolor) 
NOT a dermatophyte infection 
Caused by saprophytic, lipid-dependent yeasts 
Clinical 
 •
erythematous Diagnosis ... Potassium hydroxide (KOH ... Dermatology #SkinRash #Diagnosis
Blastomycosis Summary

Pathogen: 
 • Dimorphic fungus - Blastomyces dermatitidis or Blastomyces gilchristii.
 • The fungus lives
cerebellum Diagnosis ... 1) Fresh wet (KOH ... Blastomycosis #diagnosis
Mechanism of malignancy-associated hypercalcemia. Abbreviations: 1,25(OH)2D, 1,25-dihydroxyvitamin D; NHL, non-Hodgkin lymphoma; PTH, parathyroid hormone; PTHrP, PTH-related
Abbreviations: 1,25(OH ... #Pathophys #Diagnosis
Hypocalcemia - Differential Diagnosis Algorithm - Low and High PTH
LOW PTH - Hypoparathyroid
 - Congenital (Pediatric)
- Differential Diagnosis ... HIGH PTH - 25-OH ... anti-convulsants) - 25-OH ... #Differential #Diagnosis
Comparison of Causes of Salt-Wasting in Infancy
 - PHA 1
 - PHA 3
 - 21-OH CAH
- PHA 3 - 21-OH ... #differential #diagnosis
Hypercalcemia Evaluation
1) Clinical clues
 - Is the patient symptomatic?
 - Family history?
 - Have you done
PTHrp • 25 OH ... VitD & 1,25 OH ... #differential #diagnosis
Hypercalcemia - Differential Diagnosis Algorithm
Primary Hyperparathyroidism
 • Adenoma
 • Hyperplasia
 • MEN 1 and 2A
Tertiary Hyperparathyroidism
- Differential Diagnosis ... Conversion of 25-OH ... D3 to 1,25-(OH) ... #Differential #Diagnosis
Hypercalcemia - Differential Diagnosis Algorithm
Elevated PTH (High or normal):
 • Primary Hyperparathyroidism
 • Familial Hypocalciuric Hypercalcemia
Low
- Differential Diagnosis ... Calcitriol (1,25 OH ... #Differential #Diagnosis
Differential Diagnosis of Hypoglycemia
Evaluation of Hypoglycemia
Patients with known diabetes who are not systemically ill and can
Differential Diagnosis ... hormone, cortisol, B-OH ... insulin antibodies #Diagnosis
Calcium homeostasis is a process controlled by chiefly by hormones vitamin D and PTH. 
Vitamin D
active form, 1,25(OH ... Both 25(OH)D and ... 1,25(OH)2D are