326 results
Steroid Synthesis Pathway

(OH, hydroxy; HSD, hydroxysteroid dehydrogenase; DHEA, dehydroepiandrosterone; pink, common enzymes affecting CAH, purple –
Synthesis Pathway (OH ... pathophysiology #endocrinology
Vitamin D Metabolism
Fat-soluble vitamin
Sources: dermal synthesis and food (dairy products, fish)
Active form: calcitriol (1,25-OH Vitamin D)
Main
calcitriol (1,25-OH ... VitaminD #Metabolism #endocrinology
Hypercalcemia Evaluation
1) Clinical clues
 - Is the patient symptomatic?
 - Family history?
 - Have you done
PTHrp • 25 OH ... VitD & 1,25 OH ... differential #diagnosis #endocrinology
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 ... Pathophysiology #Endocrinology
Hypocalcemia - Differential Diagnosis Algorithm - Low and High PTH
LOW PTH - Hypoparathyroid
 - Congenital (Pediatric)
HIGH PTH - 25-OH ... anti-convulsants) - 25-OH ... Algorithm #PTH #endocrinology
Hypercalcemia - Differential Diagnosis Algorithm
Elevated PTH (High or normal):
 • Primary Hyperparathyroidism
 • Familial Hypocalciuric Hypercalcemia
Low
Calcitriol (1,25 OH ... Algorithm #causes #endocrinology
Hypercalcemia - Differential Diagnosis Algorithm
Primary Hyperparathyroidism
 • Adenoma
 • Hyperplasia
 • MEN 1 and 2A
Tertiary Hyperparathyroidism
Conversion of 25-OH ... D3 to 1,25-(OH) ... Diagnosis #Algorithm #Endocrinology
Hirsutism - Differential Diagnosis Algorithm
RAPID ONSET
Medications
 • Steroids
 • Danazol
 • Progestin Containing Contraceptives
Increased Serum Testosterone
Syndrome • 21-OH ... Diagnosis #Algorithm #endocrinology
Tinea Versicolor (Pityriasis versicolor) 
NOT a dermatophyte infection 
Caused by saprophytic, lipid-dependent yeasts 
Clinical 
 •
Potassium hydroxide (KOH
A1C and eAG
~
*For Educational Purposes Only*

#Diabetes #T2D #DM2 #Table #PrimaryCare #Endocrinology #BloodGlucose #A1C
#PrimaryCare #Endocrinology