12 results
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Rash • Human ... Malar rash ... Sarcoidosis • GPA ... Discoid skin lesions ... #rashes #differential
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Maculopapular rash ... burning sensation or pain ... reticularis Differential ... cell arteritis Infections ... #dermatology #rash
Dermatological semiology of Cutaneous Vasculitis 

Clinicopathologic correlations
 • Purpura, papules, pustules, necrosis: involvement of small vessels
(5%): PAN > GPA ... (3%) • Infections ... #dermpath #dermatology ... semiology #signs #lesions ... #differential
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
- Differential ... reddish-purple lesions ... - Vasculitis ... • Severe pain ... RA, Sjogren's, GPA
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... hemorrhagic skin lesions ... - Hemolytic anemia ... SLE) - Viral infections ... APLS • Acute Infectious
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
ischemic skin lesions ... mucositis - Rash ... to exclude are infections ... • ANCA (Dx: GPA ... #rheumatology #
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... tract: Abdominal pain ... , mucositis • Rash ... MPO > PR3 60/ GPA ... involvement, abdominal pain
Vancomycin induced Leukocytoclastic Vasculitis (LCV) of the Hand
70 M vertebral osteomyelitis on vancomycin and cefepime for
diffuse palpable rash ... Differential for ... #LCV #Hand #skinrash ... #dermatology #clinical ... #photo
Pustular Skin Lesions - Differential Diagnosis Framework

What are pustules?
• Pustules < 5-10 mm + pus
• Material
Pustular Skin Lesions ... - Differential ... Generalized itchy rash ... with rheumatic pain ... #Differential #
Giant cell arteritis (GCA)

Giant cell arteritis (GCA) definition: Most common systemic inflammatory vasculitis in older adults
very remarkable w/differential ... vs infection vs ... systemic complaints- anemia ... claudication: pain ... required due to skip lesions