124 results
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema ... Mnemonic NO cause ... Sarcoidosis or Lofgren's syndrome ... TB Viral: HSV ... , EBV, HIV, HepB
Elevated Transaminases / Transaminitis - Differential Diagnosis

 • Infectious: HAV, HCV, HEV, EBV, HSV, CMV
 •
, HCV, HEV, EBV, ... HSV, CMV • Neoplasm ... Vascular: Budd-chiari syndrome ... Sinusoidal obstruction syndrome ... Differential #Diagnosis #causes
Causes of Anterior Uveitis - Differential Diagnosis
Anterior Uveitis - 90% of cases of Uveitis
 • Inflammation
Posner-Schlossman Syndrome ... • Infectious: HSV ... Behcet's, SLE, TINU syndrome ... patient is likely HSV ... HIA B27-related syndrome
Causes of Pharyngitis - Differential Diagnosis
Infectious:
 • Bacterial: Group A Strep, Group B and C Strep,
Causes of Pharyngitis ... Neisseria gonorrhoeae, HSV ... Viral: EBV, CMV, HSV ... Lupus, Behcet syndrome ... Autoinflammatory syndromes
Purple Urine Bag Syndrome
Chronic, indwelling catheter + bacteriuria (Providencia, Klebsiella, E.coli*) + alkaline urine
Tryptophan → Indoxyl
Purple Urine Bag Syndrome ... Purple #Urine #Bag #Syndrome ... #PUBS #pathophysiology ... #clinical #photo
Causes of Hypokalemia - Differential Diagnosis Algorithm
Increased Loss 
 - Increased GI Loss
 - Increased Urinary
Causes of Hypokalemia ... - Refeeding Syndrome ... Diagnosis #Algorithm #causes ... potassium #low #pathophysiology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
• Secondary Causes ... Kasabach-Merritt syndrome ... Gardner-Diamond syndrome ... Ig A vasculitis/HSP ... • HCV, HBV Not
Causes of Adrenal Insufficiency - Differential Diagnosis Algorithm
Autoimmune:
 • Isolated
 • Polyglandular autoimmune syndrome 1
 •
Causes of Adrenal ... Polyglandular autoimmune syndrome ... Polyglandular autoimrnune syndrome ... • Fungal • HIV ... Diagnosis #Algorithm #Causes
Causes of Thrombocytopenia - Differential Diagnosis Framework
Decreased Production:
 - Drugs (chemo, yang, sulfa, acetaminophen, NSAIDs, quinine,
Causes of Thrombocytopenia ... etc) - Viral: HIV ... , HCV, EBV, CMV ... antiphospholipid syndrome
Acquired Immunodeficiency Syndrome (AIDS): Summary of Causes and Ocular Manifestations
 • Molluscum lesions
 • Eyelid Kaposi
Immunodeficiency Syndrome ... AIDS): Summary of Causes ... retinitis • HIV ... ophthalmology #HIV