1204 results
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
Cold Urticaria Prevalence ... trigger - Direct skin ... 50% of patients Skin ... 1% of patients Skin ... #diagnosis #rheumatology
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Involving the Skin ... Vasculitis Skin ... bullae, Ulceration, Urticaria ... - Anti-C1q (Urticarial ... #dermatology #rheumatology
Clinical Features of Systemic Lupus (SLE)
General: Fever (50%), Depression, Fatigue (75%), Weight loss (50%)
Eye: Sjögrens (15%)
Skin
Sjögrens (15%) Skin ... Vasculitis, Purpura, Urticaria ... symptoms #diagnosis #rheumatology
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Polyangiitis (GPA) Skin ... vasculitis Skin ... also occur Skin ... gangrenosum) • Urticaria ... rash #diagnosis #rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
Purpura, ischemic skin ... Hypocomplementemic Urticarial ... Vasculitis): - Urticaria ... cryoglobulinemia, urticarial ... differential #diagnosis #rheumatology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Purpura, ischemic skin ... Hypocomplementemia: Urticarial ... Hypocomplementemic Urticarial ... maculopapular lesions, urticaria ... Differential #Diagnosis #Rheumatology
Adult Onset Still's Disease
Systemic inflammation with urticarial rash.
Rash: 
 • Nonpruritic, evanescent (correlates with time of
inflammation with urticarial ... maculopapular skin ... AOSD #diagnosis #rheumatology
Diagnosis and Management of Hypocomplementemic Urticarial Vasculitis (HUV)

Diagnosis of HUV
1) Chronic urticaria 
2) Leukocytoclastic vasculitis 
3)
Hypocomplementemic Urticarial ... HUV 1) Chronic urticaria ... Hypocomplementemic #Urticarial ... Diagnosis #Management #Rheumatology
Severe Urticarial Skin Rash on Physical Exam

#Urticarial #Skin #Rash #PhysicalExam #clinical #video #dermatology #urticaria
Severe Urticarial ... Skin Rash on Physical ... Exam #Urticarial ... #Skin #Rash #PhysicalExam ... #dermatology #urticaria
Pathophysiology of Hypocomplementemic Urticarial Vasculitis

C1q/anti-C1q antibiody ->
Immune Complex Formation - Complement Pathway Activation (C3a and C5a)
Hypocomplementemic Urticarial ... Hypocomplementemic #Urticarial ... Pathophysiology #Rheumatology