9 results
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Vesicopustule on erythematous ... lesions • Discoid lupus ... erythematosus ... #dermatology ... #rashes #differential
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
Aortitis - Differential ... , Cogan's Syndrome ... (RA), Systemic ... lupus erythematosus ... (SLE), Sarcoidosis
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
SLE (Systemic Lupus ... Erythematosus) ... rashErythematous ... lupus erythematosus ... #Systemic #Lupus
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
Antinuclear Antibodies ... lupus erythematosus ... lupus erythematosus ... lupus erythematosus ... (SLE), Systemic
Clinical Features of Systemic Lupus (SLE)
General: Fever (50%), Depression, Fatigue (75%), Weight loss (50%)
Eye: Sjögrens (15%)
Skin
Clinical Features ... of Systemic Lupus ... , Vasculitis, Purpura ... #SLE #systemic ... #erythematosus #
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
ischemia - Skin: erythematous ... mucositis - Rash ... lupus erythematosus ... purpura: strong sign ... claudication, aortitis
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
lupus erythematosus ... • Fever is the main ... Petechial or purpuric rash ... lupus erythematosus ... [SLE], AOSD) •
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... diseases, such as SLE ... purpura: Strong sign ... ischemia • Skin: Erythematous ... , mucositis • Rash
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
affected joint • Systemic ... lupus erythematosus ... (SLE) - Antinuclear ... , and low back pain ... ANA and RF (if clinical