254 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 ... Differential Diagnosis ... #rash #diagnosis
Vasculitis Involving the Skin - Differential Diagnosis Framework

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

Diagnosis of HUV
1) Chronic urticaria 
2) Leukocytoclastic vasculitis 
3)
Diagnosis and Management ... Vasculitis (HUV ... ) Diagnosis of ... HUV 1) Chronic urticaria ... #Vasculitis #HUV
Causes of Urticaria

Immunoglobulin E (IgE) mediated

 - Aeroallergens

 - Contact allergen

 - Food allergens

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

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential Diagnosis ... tract, and often causes ... - Urticaria and ... Differential Diagnosis ... differential #diagnosis
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 ... Disorientation, vertigo Diagnostic ... #diagnosis #rheumatology
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 ... #dermpath #dermatology ... signs #lesions #diagnosis
Pruritus - Primary Skin Lesion - Differential Diagnosis Algorithm
Macules / Papules / Plaques:
 • Xerosis (dry
- Differential Diagnosis ... Wheals/Hives: • Urticaria ... Pruritus #primary #dermatology ... #Differential #Diagnosis ... #Algorithm #causes
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
- Differential Diagnosis ... morphology • Urticaria ... Reactive #SkinRash #dermatology ... #Differential #Diagnosis ... #Algorithm #causes
Vascular Skin Lesions - Differential Diagnosis Algorithm
 - Petechiae < 0.2 cm diameter
 - Purpura 0.2
- Differential Diagnosis ... #Vascular #Vasculitis ... #SkinRash #dermatology ... #Differential #Diagnosis ... #Algorithm #causes