11 results
Borrelia recurrentis on Peripheral Blood Smear
23M Somali refugee recently arrived w/severe abd pain, confusion and fever
BP stable, HR 115 ... caused by Borrelia ... The table below ... rearranged and variably ... recurrentis #BloodSmear #microscopy
Algorithmic Approach to Acute Interstitial Nephritis
When to suspect AIN? (not sensitive)
 • AKI, AKD, rapidly progressive
Algorithmic Approach ... triad (<10%): fever ... sterile pyuria, WBC casts ... eosinophiluria, microscopic ... Nephritis #AIN #Algorithm
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
Causes of Proteinuria ... Differential Diagnosis Algorithm ... • Exercise • Fever ... polyangiitis (GPA) / microscopic ... #Causes
Inflammatory Joint Pain - Differential Diagnosis Algorithm 
Monoarticular
 • Gout (Podagra, Tophi)
 • Pseudogout
 • Early
Differential Diagnosis Algorithm ... • Rheumatic Fever ... polyangiitis (GPA)/microscopic ... • Rheumatic Fever ... #Orthopedics #Causes
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... Differential Diagnosis Algorithm ... Red Flags: • Fever ... Sjogren's, GPA, EGPA, Microscopic ... #Causes #dermatology
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
Summary table of ... Allergen-specific lgE causes ... Anaphylaxis, Hay fever ... types #allergy #table ... #classification
Differentiating NBTE from Infective Endocarditis
No pathognomonic signs/symptoms or echo features that are specific to NBTE, and
Clinical features: Fever ... Clinical features: Fever ... in up to 30% of cases ... Mobile mass of variable ... Marantic #diagnosis #table
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
PR3-ANCA): • Microscopic ... tract, and often causes ... > 50 years VARIABLE-VESSEL ... Vasculitis: • Fevers ... #rheumatology #classification
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis: • Fevers ... and branches • Fever ... (PR3-ANCA)): Microscopic ... tract, and often causes ... malignancy • Variable-vessel
Unicentric Castleman Disease (UCD) vs Multicentric Castleman Disease (MCD) - Comparison Table

Unicentric Castleman Disease (UCD):
 •
) - Comparison Table ... Systemic symptoms: fever ... • Prognosis: Variable ... ; depends on cause ... Disease #Comparison #Table