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Delayed pressure urticaria
1St John's Institute of Dermatology, King's College London, St Thomas Hospital, UK.
The Journal of Investigative Dermatology. Symposium Proceedings
|January 5, 2002
Summary
Delayed pressure urticaria causes painful skin swelling hours after pressure application. Current treatments are often ineffective, impacting patient quality of life and necessitating new management strategies.
Area of Science:
- Dermatology
- Immunology
- Allergy
Background:
- Delayed pressure urticaria (DPU) is a physical urticaria characterized by delayed, painful swelling after sustained skin pressure.
- DPU significantly impairs patient quality of life, more so than other urticaria types.
- Its pathogenesis involves mast cell activation and deep dermal inflammation, but remains poorly understood.
Purpose of the Study:
- To summarize the characteristics of delayed pressure urticaria.
- To highlight the challenges in its current management.
- To emphasize the need for improved therapeutic approaches.
Main Methods:
- Review of existing literature on delayed pressure urticaria.
- Analysis of clinical presentation and histological findings.
- Evaluation of current and potential treatment strategies.
Main Results:
- DPU lesions present as erythematous, painful swellings several hours post-pressure.
- Histology shows mast cell activation with neutrophil and eosinophil infiltrate, but no vasculitis.
- Existing treatments, including antihistamines and anti-inflammatories, are often unsatisfactory.
Conclusions:
- Delayed pressure urticaria poses significant challenges due to its severity and resistance to conventional therapies.
- Oral steroids are effective but not suitable for long-term management.
- Novel management strategies are under investigation for this persistent condition.
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