86 results
Anisocoria Evaluation Flow Chart - Differential Diagnosis
1. Check pupillary reaction to light 
2. Measure pupil size.
Evaluation Flow Chart ... - Differential ... pupil size in bright ... - Horner's Syndrome ... Evaluation #Algorithm #Differential
Algorithm for the Evaluation of Chronic Diarrhea (< 7 days)
Exclude:
1. Causes of acute diarrhea
2. Lactose intolerance
3.
Irritable bowel syndrome ... Malabsorption syndromes ... Normal stool weight ... Increased stool weight ... workup #diagnosis #differential
Causes of Sudden Cardiac Arrest
Primary Myocardial Processes (> 90%):
 • Acquired structural heart disease: CAD, Most
Arrhythmogenic right ... Long/short QT syndromes ... , Brugada syndrome ... Acquired long QT syndrome ... Arrest #cardiology #differential
Purple Urine Bag Syndrome
Chronic, indwelling catheter + bacteriuria (Providencia, Klebsiella, E.coli*) + alkaline urine
Tryptophan → Indoxyl
Purple Urine Bag Syndrome ... Purple #Urine #Bag #Syndrome ... pathophysiology #clinical #photo ... #differential #
Horner's Syndrome: Loss of sympathetic nervous system input to (in this case) right eye. 
Note that
Horner's Syndrome ... Note that right ... Also that right ... Ophthalmology #Photo ... #Horners #Syndrome
Causes of Generalized Edema - Differential Diagnosis Algorithm
Overfill (Increased renal sodium retention, Urine Na > 40meq/L)
Generalized Edema - Differential ... • Nephrotic Syndrome ... Hydrostatic Pressure • Right ... • Nephrotic syndrome ... #Generalized #Differential
Amenorrhea - Differential Diagnosis Algorithm
Elevated FSH
 • Premature Ovarian Failure
 • Menopa use
 • Spontaneous
Bleed With
Amenorrhea - Differential ... Polycystic Ovarian Syndrome ... • Empty Sella Syndrome ... Amenorrhea • Weight ... #Amenorrhea #Differential
Mydriasis and Miosis - Differential Diagnosis Framework

Causes of Mydriasis:
Dilated pupils (mydriasis) more than 7mm
 • Unilateral
Mydriasis and Miosis - Differential ... response, Serotonin syndrome ... Miosis: Horner's syndrome ... light response ... Mydriasis #Miosis #differential
Cystic Lung Disease
Upper Lobe Predominant: 
Langerhans Cell Histiocytosis, Pneumocystis Jiroveci, Hypersensitivity Pneumonitis, Neurofibromatosis Type 1, Paracoccidioidomycosis,
Ehlers-danlos Syndrome ... Amyloidosis, Proteus Syndrome ... Lymphangioleiomyomatosis, Light ... Birt-Hogg-Dubé Syndrome ... Lung #Disease #differential
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Knee Effusions - Differential ... sweats/Weight loss ... Osteoarthritis - Overuse syndrome ... Seronegative Reactive Syndrome ... Effusions #causes #differential