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EULAR/ACR Classification Criteria for Systemic Lupus Erythematosus
Clinical Domains:
 • Constitutional domain: Fever
 • Cutaneous domain: Non-scarring
EULAR/ACR Classification ... Erythematosus Clinical ... Constitutional domain: Fever ... anticoagulant • Complement ... #Criteria #SLE
Serious Bacterial Illness (SBI):
1) UTI and pyelonephritis
Most common cause of SBI
Accounts for 3-8% of uncharacterized fevers
Female
pyelonephritis Most common cause ... uncharacterized fevers ... Consider BCx, CSF ... presentation Urinalysis: LE ... Diagnosis #Peds #EM #Classification
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... Vasculitis: • Fevers ... against MPO • Complement ... vasculitis, and SLE ... #rheumatology #classification
In order to better classify heart failure, the American College of Cardiology Foundation and the American
of the ACC/AHA Classification ... Below one can see ... in patients who never ... Diagnosis #Cardiology #CHF ... #Stages #Classes
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
) Suspect: Clinical ... weight loss, and fever ... anti-Smith Ab, low complements ... Skin Disease Classification ... to: Arthritis, Fever
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• They can cause ... Cryoglobulins Cause ... Syndrome: • Clinical ... • Low serum C4 complement ... diagnosis #types #classification
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
diseases, such as SLE ... Cerebrospinal fluid (CSF ... tract, and often causes ... Elevated AST ALT • Hypocomplementemia ... Vasculitis) • Hypocomplementemic
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
status NTM Cause ... Growers (Runyon Classification ... Growers (Runyon Classification ... massiliense in CF ... Lung Disease: • Clinical
Majocchi’s Granuloma due to Trichophyton rubrum 
This is GMS stain and culture of a skin biopsy
No fever. ... tissues - mainly caused ... recommended as sole ... Competent and compromised ... recommended Mayo Clinic