12 results
Approach to a Positive (+) Rheumatoid Factor (RF)
(+) RF does not always = RA
Rheumatic disorders:
 •
arthritisSLE ... connective tissue (types ... III) • Mixed cryoglobulinemia ... #Factor #RF #rheumatology ... #differential #diagnosis
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
Labs/Diagnosis: ... (e.g. systemic lupus ... erythematosus (SLE ... ), rheumatoid arthritis ... #rheumatology #
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
- Differential Diagnosis ... (rare) • Rheumatic ... Systemic lupus ... erythematosus (SLE ... #rheumatology
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
rheumaticum • Rheumatic ... Hypersensitivity vasculitis ... lesions • Discoid lupus ... #differential #diagnosis ... #rheumatology
Connective tissue disease-associated interstitial lung diseases

LIP: lymphoid interstitial pneumonia. NSIP: nonspecific interstitial pneumonia. OP: organizing pneumonia.
RA: rheumatoid arthritis ... SLE : systemic ... lupus. ... LungDisease #CTILD #Diagnosis ... #Differential #Comparison
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
ANCA +MPO) • Cryoglobulinemic ... : Systemic rheumatic ... such as systemic lupus ... , and SLE) • Urinalysis ... #rheumatology #
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Behcet disease, Cryoglobulinemia ... Complex: Systemic lupus ... erythematosus, Rheumatoid ... arthritis, Systemic ... #nephrology
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
SLE (Systemic Lupus ... Differential Diagnosis ... , rheumatoid arthritis ... Kikuchi disease • Type-I ... #Rheumatology
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Rheumatology Workup ... joint • Systemic lupus ... Tests for All Types ... #workup #diagnosis ... #testing #Rheumatology
Sweet Syndrome

Acute febrile neutrophilic dermatosis (Sweets Syndrome) is a skin condition characterized by fever and inflamed
febrile neutrophilic dermatosis ... such as certain types ... - Neutrophilic rheumatoid ... Leukocytoclastic vasculitis ... ’s syndrome - Lupus