11 results
Warm Antibody Autoimmune Hemolytic Anemia 
1) DIAGNOSE AIHA
 • Anemia: macrocytic > normocytic, ↑ reticulocytes
 •
LDH • Anti-RBC autoantibodies ... • Blood smear: Differential ... 2) LOOK FOR a cause ... → Systematic screening ... management #treatment #rheumatology
Systemic Lupus Erythematosus - Diagnosis
Manifestations:
 - Arthritis 69%
 - Malar rash 40%
 - Fever 36%
 -
Systemic Lupus Erythematosus ... 69% - Malar rash ... Diagnosis and Lupus ... #Diagnosis #autoantibodies ... #rheumatology
Causes of Hypocomplementemia - CHAMPS Mnemonic
C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis
H - Heavy Chain deposition
Causes of Hypocomplementemia ... Atypical HUS, autoimmune ... Lupus Erythematosus ... #differential # ... hematology
Top 10 situations when to think about lupus
1) Inflammatory joint pain (especially in the wrists and
everywhere) 2) A rash ... the face (many differential ... including in children (pediatric ... #clues #system ... erythematosus #rheumatology
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Early liver disease ... associated with systemic ... #Causes #diagnosis ... #differential # ... hematology #coagulation
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Differential Diagnosis ... • Reduced liver ... associated with systemic ... #Causes #diagnosis ... hematology #coagulation
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
SLE (Systemic Lupus ... • Anti-Ro/SSA autoantibodies ... permanent alopecia Differential ... rheumatologic diseases ... #Diagnosis #Rheumatology
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
NPSLE rare, Malar rash ... months) and of autoantibodies ... months to years) Systemic ... comparison #table #rheumatology ... #diagnosis #management
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
of Hemostasis - Differential ... Diagnosis Framework ... the PT remains prolonged ... discern these causes ... #Diagnosis #Hematology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... mucositis - Rash ... Diagnosis: Systemic ... lupus erythematosus ... #diagnosis #rheumatology