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Related Concept Videos

Hypersensitivity Reactions: Immune-Complex Reactions01:19

Hypersensitivity Reactions: Immune-Complex Reactions

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Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum...
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Peripheral Artery Disease I: Introduction01:30

Peripheral Artery Disease I: Introduction

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Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
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Rheumatic Heart Disease I: Introduction01:23

Rheumatic Heart Disease I: Introduction

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Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
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Nephrotic Syndrome I : Introduction01:24

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Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of...
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Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation01:21

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

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Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
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Endocarditis II: Clinical Features of Infective Endocarditis01:25

Endocarditis II: Clinical Features of Infective Endocarditis

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Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
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Updated: Feb 25, 2026

Author Spotlight: Exploring the Role of Inflammation in the Co-occurrence of Primary Sjogren's Syndrome and Lung Adenocarcinoma
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Polyarteritis nodosa and cutaneous polyarteritis nodosa.

Courtney R Herbert1, Glenn G Russo

  • 1Department of Dermatology, Tulane University Medical Center, New Orleans, LA 70112, USA.

Skinmed
|December 16, 2003
PubMed
Summary

Recognizing cutaneous vasculitis lesions is key for diagnosis. This review differentiates polyarteritis nodosa from its cutaneous form, guiding workup and management.

Area of Science:

  • Dermatology
  • Rheumatology
  • Internal Medicine

Background:

  • Cutaneous vasculitis presents with diverse lesions and symptoms.
  • Early recognition of vasculitic lesions is crucial for timely diagnosis and management.
  • Understanding the spectrum of vasculitic conditions aids clinical decision-making.

Purpose of the Study:

  • To compare and contrast polyarteritis nodosa with its cutaneous manifestation.
  • To outline the diagnostic workup for suspected vasculitic conditions.
  • To emphasize the management strategies for polyarteritis nodosa and cutaneous vasculitis.

Main Methods:

  • Literature review comparing polyarteritis nodosa and cutaneous vasculitis.
  • Discussion of diagnostic approaches including laboratory studies.

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  • Emphasis on clinical recognition of vasculitic lesions.

    • Main Results:

    • Polyarteritis nodosa and its cutaneous form share some features but have distinct characteristics.
    • Diagnostic workup involves recognizing specific lesions and utilizing laboratory tests.
    • Management strategies are tailored to the specific vasculitic entity.

    Conclusions:

    • Accurate identification of cutaneous vasculitis lesions is essential for appropriate patient care.
    • Differentiating between systemic and cutaneous forms of vasculitis informs treatment.
    • A systematic approach to diagnosis and management improves outcomes for patients with vasculitis.