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Intradermal Microdialysis: An Approach to Investigating Novel Mechanisms of Microvascular Dysfunction in Humans
Published on: July 21, 2023
[Cutaneous vasculitis]
A Pulido-Pérez1, J A Avilés-Izquierdo, R Suárez-Fernández
1Servicio de Dermatología, Hospital General Universitario Gregorio Marañón, Madrid, España.
Insights
Vasculitis involves blood vessel inflammation. This review details cutaneous vasculitis, aiding diagnosis and treatment for better patient outcomes.
Area of Science:
- Immunology
- Dermatology
- Pathology
Background:
- Vasculitis is blood vessel inflammation, challenging to classify due to unknown causes.
- Microscopic changes in vessel walls aid in distinguishing clinical forms based on vessel size and inflammatory cells.
- Skin manifestations correlate with affected vessel size, while prognosis depends on extracutaneous disease presence.
Purpose of the Study:
- To review the pathophysiology, histopathology, treatment, and differential diagnosis of cutaneous vasculitis.
- To provide practical insights into managing patients with vasculitis involving the skin.
Main Methods:
- Review of existing literature on vasculitis classification, pathogenesis, and clinical presentation.
- Analysis of histopathological findings and their correlation with clinical manifestations.
- Evaluation of current treatment strategies and their impact on patient survival.
Main Results:
- Classification of cutaneous vasculitis remains challenging.
- Histopathology is crucial for distinguishing vasculitis types based on vessel caliber and inflammatory infiltrate.
- Skin lesions are common and correlate with vessel size; prognosis is linked to systemic involvement.
Conclusions:
- Understanding vasculitis pathophysiology and histopathology is key for diagnosis.
- Effective treatment, including immunosuppressants, has improved survival rates.
- This review offers a practical guide to the clinical management of cutaneous vasculitis.
Abstract:
Vasculitis is a term that refers to damage and inflammation of the walls of blood vessels of any size. The classification of types of cutaneous vasculitis continues to be a challenge, probably because of our lack of understanding of the etiology and pathogenesis of this condition. Changes in the vessel wall will be visible on microscopy and will enable the different clinical forms to be distinguished according to the caliber of affected vessels, the type of cell that predominates in the inflammatory infiltrate, or the presence of such key findings as extravascular granulomas. Skin manifestations (macules, papules, nodules, livedo reticularis, etc) correlate with the size of the vessel affected. The prognosis in cases of vasculitis with skin involvement will be determined by the presence or absence of extracutaneous disease. Systemic vasculitis shows a predilection for certain organs, such as the kidney or lung. The introduction of immunosuppressant drug treatments has led to evident improvement in survival rates for patients with vasculitis. This review covers practical aspects of the pathophysiology, histopathology, treatment, and differential diagnosis of the main clinical presentations of vasculitis with cutaneous involvement.
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