Urticarial Vasculitis: Diagnosis and Treatment

In this episode of the UCARE Global Allergy and Asthma Excellence Network podcast on Urticaria, Prof. Torsten Zuberbier speaks with Prof. Angelo Valerio Marzano from Milan about urticarial vasculitis and its challenging differential diagnoses. They explore how clinicians can distinguish urticarial vasculitis from chronic urticaria and other dermatological or systemic conditions and discuss practical approaches to diagnosis and treatment.

They discuss: 🔹 When should wheals raise suspicion of urticarial vasculitis? 🔹 Which conditions can mimic urticarial vasculitis? 🔹 When is a skin biopsy necessary? 🔹 Which laboratory tests can help identify systemic inflammation or associated disease? 🔹 When should patients be referred to a specialized UCARE center? 🔹 How can mild or overlapping cases of urticarial vasculitis be treated? 🔹 Which therapeutic options are available when antihistamines are insufficient?

The episode emphasizes that long-lasting wheals, especially those persisting beyond 24 hours, require careful evaluation. Accurate diagnosis, appropriate testing, and specialist referral when needed are essential for distinguishing true urticaria from vasculitis and other urticarial-like conditions.

Key Learnings from the Episode: Urticarial vasculitis can closely resemble conventional urticaria. Wheals lasting more than 24 hours are an important diagnostic warning sign. Mixed and overlapping clinical presentations can make diagnosis challenging. Skin biopsy plays a central role when urticarial vasculitis is suspected. Blood count and inflammatory markers can provide additional diagnostic information. Systemic symptoms and autoimmune conditions should be considered during evaluation. Some complex cases require assessment at a specialized dermatology or UCARE center. Short courses of systemic corticosteroids may be considered in selected cases. Dapsone, colchicine, and conventional immunosuppressants are among the discussed options for appropriate patients. There is no single standard approach, making accurate diagnosis and individualized management essential.

Chapters: 00:00 Introduction to Urticarial Vasculitis and Its Challenges 01:59 Clinical Features and Differential Diagnosis 02:51 Role of Skin Biopsy and Histopathology 05:03 Autoimmune and Systemic Conditions Associated with Urticarial Vasculitis 08:00 Treatment Approaches and Management Strategies 13:49 Case Management in Private Practice and Referral Guidelines 18:01 Summary and Final Recommendations

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