Dr. Gerald Diaz @GeraldMD
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Board Certified Internal Medicine Hospitalist, GrepMed Editor in Chief 🇵🇭 🇺🇸 - Sign up for an account to like, bookmark and upload images to contribute to our community platform. Follow us on IG: https://www.instagram.com/grepmed/ | Twitter: https://twitter.com/grepmeded/
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Reflex Testing - Causes of Hyporeflexia and Hyperreflexia
Focal Hyporeflexia: 
 • Radiculopathy, Mononeuropathy, Polyneuropathy, Acute stroke,
Reflex Testing - ... Hypermagnesemia, Hypothyroidism ... Hyperreflexia #Testing ... #Causes #differential ... #diagnosis #table
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
Hypertension - Differential ... and Screening Testing ... • Hyperthyroidism ... #Hypertension #Differential ... Screening #Workup #table
Approach to Low Back Pain - Differential Algorithm
- Non-MSK
- Axial / Musculoskeletal
- Radicular
- Systemic Disease (Do
Approach to Low ... Back Pain - Differential ... Algorithm - Non-MSK ... #LowBackPain #Differential ... #Algorithm #Causes
Cushing Syndrome Testing Algorithm
INDICATIONS FOR TESTING:
 • Suspected Cushing syndrome (central obesity, muscle weakness, refractory hypertension)
Testing:
Algorithm INDICATIONS ... FOR TESTING: • ... Cortisol, Saliva • Low ... dexamethasone suppression test ... Syndrome #diagnosis #algorithm
Adrenal Insufficiency Differential Diagnosis Algorithm
Clinical suspicion: Weakness, fatigue, nausea, musculoskeletal pain, dizziness, volume depletion, abdominal pain,
Insufficiency Differential ... Diagnosis Algorithm ... Weakness, fatigue, nausea ... , hypoglycemia Testing ... ACTH) stimulation test
Hyponatremia - Differential Diagnosis Algorithm
ADH Independent:
 • Tea and Toast Syndrome, Beer Potomania - Low solute
Hyponatremia - Differential ... Diagnosis Algorithm ... Beer Potomania - Low ... • Euvolemic - Hypothyroidism ... #causes #nephrology
Adrenal Insufficiency Diagnosis Algorithm - Evaluation of HPA Axis Response to ACTH

Early am cortisol < 3
Insufficiency Diagnosis Algorithm ... unclear (often the case ... then go to stim testing ... Standard Stim test ... primary AI - Low
Diagnosis Adrenal Insufficiency - Algorithm

Step 1) Screening Test: 6-8AM Cortisol Level
 - Early morning cortisol levels
Insufficiency - Algorithm ... specificity for AI (but low ... require Cosyntropin testing ... Step 3) Differentiate ... - Low ACTH is
Hyponatremia - Differential Diagnosis by Mechanism
Decr Blood Pressure (“Decr Effective Circulating Volume”) 
 - Volume depletion
Hyponatremia - Differential ... Cerebral salt wasting ... Endocrinopathies - Hypothyroidism ... #Diagnosis #Table ... #Causes #Sodium
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
time you have a case ... normal volume-based algorithm ... Uosm), Hypothyroidism ... #Hyponatremia #differential ... #diagnosis #table