10 results
Idiopathic CD4 Lymphopenia (ICL) / Lymphocytopenia 

DIAGNOSTIC CRITERIA FOR ICL
 • Persistent CD4 T-cell lymphopenia
 •
Autoimmune ... chemotherapy) • Genetic syndromes ... EBV. CMV. ... #Differential # ... Causes #lymphocytopenia
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
permanent alopecia Differential ... • Non-autoimmune ... rheumatologic diseases ... deficiencies • Autoimmune ... Erythematosus #Diagnosis #Rheumatology
Acute Liver Injury - Differential Diagnosis Algorithm

Vascular Causes of Acute Liver Injury: 
 • Hepatic vein:
Liver Injury - Differential ... Algorithm Vascular Causes ... vein: Budd-chiari syndrome ... HBV, HCV, HEV, EBV ... • Autoimmune:
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
Cold Agglutinin Syndrome ... Viral infection, autoimmune ... hemolysis • C3↓ C4 ... - Mycoplasma, EBV ... pts) Differential
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
Vasculitides - Differential ... tract, and often causes ... mucositis - Rash ... Differential ... #diagnosis #rheumatology
Causes of Purpura or Easy Bruising in Children

Platelet count reduced, i.e. thrombocytopenia
 - Increased platelet destruction
Causes of Purpura ... Congenital heart disease ... Purpura #Bruising #Causes ... #peds #pediatrics ... #diagnosis #differential
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... , mucositis • Rash ... tract, and often causes ... pain and GN Anti-GBM ... #Diagnosis #Rheumatology
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
- Differential ... Symptoms: • Gottron rash ... • ANA < 20 % IBM ... statins - probably caused ... #differential #
Elevated Globulin - Protein Gap (Total Protein - Albumin > 4)

Work-up of an Elevated Globulin Gap:
•
• Heavy chain disease ... changes (POEMS syndrome ... acute HIV, HBV, EBV ... Cirrhosis, ETOH, autoimmune ... Gap #ProteinGap #differential
Hemophagocytic Lymphohistiocytosis (HLH)

High mortality without prompt recognition and management. HLH is a critical diagnostic consideration in
caused by uncontrolled ... Infections (e.g., EBV ... Malignancies ▪ Autoimmune ... diseases (often ... of NK cells and CD8