325 results
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Dermatologic Manifestations ... GPA causes disease ... gangrenosum) • Urticaria ... #Dermatologic ... Polyangiitis #GPA #dermatology
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Vasculitis Involving ... 50% Cutaneous Vasculitis ... bullae, Ulceration, Urticaria ... - Anti-C1q (Urticarial ... #skin #dermatology
Diagnosis and Management of Hypocomplementemic Urticarial Vasculitis (HUV)

Diagnosis of HUV
1) Chronic urticaria 
2) Leukocytoclastic vasculitis 
3)
Hypocomplementemic Urticarial ... Vasculitis (HUV ... HUV 1) Chronic urticaria ... Leukocytoclastic vasculitis ... #Vasculitis #HUV
Vasculitis: In this instance, the vasculitic skin lesions were secondary to Haemophilus endocarditis.
Photo credit, Josh Fierer,
Vasculitis: In this ... instance, the vasculitic ... Clinical #Photo #Dermatology ... #SkinRash #Vasculitis
Pathophysiology of Hypocomplementemic Urticarial Vasculitis

C1q/anti-C1q antibiody ->
Immune Complex Formation - Complement Pathway Activation (C3a and C5a)
Hypocomplementemic Urticarial ... Vasculitis C1q ... Formation -> Vasculitis ... Hypocomplementemic #Urticarial ... #Vasculitis #HUV
Causes of Urticaria

Immunoglobulin E (IgE) mediated

 - Aeroallergens

 - Contact allergen

 - Food allergens

 - Insect
Causes of Urticaria ... Lymphoma - Vasculitis ... #Differential #Urticaria ... Mediated #NonIgE #Causes
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
Vasculitis and Vasculitides ... tract, and often causes ... Hypocomplementemic Urticarial ... - Urticaria and ... cryoglobulinemia, urticarial
Severe Urticarial Skin Rash on Physical Exam

#Urticarial #Skin #Rash #PhysicalExam #clinical #video #dermatology #urticaria
Severe Urticarial ... Physical Exam #Urticarial ... clinical #video #dermatology ... #urticaria
Dermatological semiology of Cutaneous Vasculitis 

Clinicopathologic correlations
 • Purpura, papules, pustules, necrosis: involvement of small vessels
semiology of Cutaneous Vasculitis ... Identification of causes ... • Drug-induced vasculitis ... • Necrotizing vasculitis ... #dermpath #dermatology
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
Cold Urticaria Prevalence ... decades of life Causes ... fever, fatigue, Nausea ... Chronic inducible urticarias ... .14674 #Cold #Urticaria