6 results
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... Algorithm Pinpoint ... hemostasis: - Thrombocytopenia ... (lupus, RA, Sjogren's ... #Algorithm #Causes
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
Post-strep GN, Lupus ... Nephritis, Cryoglobulinemia ... Henoch-SchonIein Purpura ... #differential #diagnosis ... #algorithm #rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
often causes arthritis ... inflammation Others: • Lupus ... systemic lupus ... , and SLE) • Urinalysis ... #rheumatology #
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
mucosal bleeding (Petechial ... [SLE], AOSD) • ... thrombocytopenia ... Activation #Syndrome #Diagnosis ... #Management #Hematology
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
months to years) Systemic ... nephritis, NPSLE ... Workup: - ANA ... #sle #comparison ... #diagnosis #management
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Diagnosis Framework ... SLE, atherosclerotic ... often causes arthritis ... - interstitial keratitis ... #Rheumatology