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Introduction to Language of Pathophysiology l

Introduction to Language of Pathophysiology l

Pathophysiology investigates how biological mechanisms—typically starting at the cellular level—disrupt normal bodily functions. It bridges anatomy and physiology to explain the progression of disease. With this foundation, it is important to understand the following key terms used to describe disease processes: Diagnosis:The process of identifying a disease using clinical evaluation, including signs (objective evidence like rashes), symptoms (subjective experiences like pain), laboratory test...

Introduction to Language of Pathophysiology ll

Introduction to Language of Pathophysiology ll

This lesson explores key terms that describe how diseases progress, their outcomes, and their distribution in populations.Diagnostic tests identify diseases and monitor treatment. These include blood and urine tests, biopsies, imaging (X-ray, MRI), and detection of infectious agents.Remission is a reduction or disappearance of symptoms.Exacerbation refers to the worsening of symptoms, such as increased wheezing during an asthma attack.A precipitating factor triggers an acute episode, while a...

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

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...

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...

Atherosclerosis II: Clinical Manifestations and Diagnostic Tests

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Atherosclerosis is a progressive disorder that leads to the thickening and narrowing of arterial walls due to plaque buildup. This condition can cause various symptoms depending on the arteries affected:Coronary Artery Disease (CAD): This condition affects the coronary arteries and may lead to chest pain (angina), shortness of breath (dyspnea), heart attacks, and other heart disease symptoms.Cerebrovascular Disease: This affects blood flow to the brain, causing transient ischemic attacks (TIAs)...

Coronary Artery Disease II: Pathophysiology

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Updated: Jul 6, 2026

Intravital Microscopy Imaging of the Liver following Leishmania Infection: An Assessment of Hepatic Hemodynamics

Intravital Microscopy Imaging of the Liver following Leishmania Infection: An Assessment of Hepatic Hemodynamics

Published on: July 28, 2015

[Livedo: from pathophysiology to diagnosis].

A Duval¹, J Pouchot

¹Service de médecine interne de l'hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75010 Paris, France. arnaudduval@netcourrier.com

La Revue De Medecine Interne

|April 1, 2008

Summary

This guide offers a diagnostic approach for livedo, detailing pathophysiology and clinical features. It aids in distinguishing vasomotor livedo from disease-related causes for better patient diagnosis.

Area of Science:

Dermatology and Internal Medicine
Pathophysiology of vascular disorders
Clinical diagnostics

Context:

Livedo, characterized by purplish-blue erythema, results from slowed blood flow in dermal venules.
Causes include local vasoconstriction or arteriolar occlusion due to blood abnormalities or parietal thickening.
Clinical differentiation between vasomotor livedo and disease-associated livedo can be challenging.

Purpose:

To present a diagnostic strategy for evaluating livedo lesions.
To review the pathophysiology of livedo using key literature.
To provide a thorough understanding of livedo-related diseases, diagnostic features, and prevalence.

Summary:

The approach integrates pathophysiology review with practical bedside tools (figures, tables) and in-depth analysis.

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It emphasizes the complex mechanisms underlying various livedo-associated diseases.

Diagnostic procedures are guided by patient history, livedo characteristics, and symptoms, with biopsy utility noted for infiltrated or necrotic lesions.

Impact:

Facilitates accurate diagnosis and management of livedo by clinicians.
Highlights specific pathophysiological insights, such as intimal pseudohyperplasia and white cell activation in certain syndromes.
Aims to clarify the diagnostic significance and implications of livedo patterns.