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Asthma-II: Pathophysiology and Classification

Asthma-II: Pathophysiology and Classification

Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:

Other Pulmonary Disorders

Other Pulmonary Disorders

Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.

Asthma: Pathogenesis and Management

Asthma: Pathogenesis and Management

Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.

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Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
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Asthma-I: Introduction

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Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...

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Related Experiment Video

Updated: Apr 6, 2026

Author Spotlight: Investigating the Pathophysiology of Eosinophilic Esophagitis

Author Spotlight: Investigating the Pathophysiology of Eosinophilic Esophagitis

Published on: May 10, 2024

Eosinophilia in Pulmonary Disorders.

Kerry Woolnough¹, Andrew J Wardlaw¹

¹Department of Infection Immunity and Inflammation, Institute for Lung Health, University of Leicester, Groby Road, Leicester LE3 9QP, UK; Department of Respiratory Medicine and Allergy, University Hospitals of Leicester NHS Trust, Groby Road, Leicester LE3 9QP, UK.

Immunology and Allergy Clinics of North America

|July 27, 2015

Summary

Peripheral blood eosinophilia with lung disease is rare but significant. New antieosinophil therapies targeting interleukin 5 show promise for managing eosinophilic lung disease and asthma, potentially reducing steroid side effects.

Keywords:

AFAD Asthma Eosinophilic granulomatosis with polyangiitis (EGPA)Eosinophilic pneumonia Hypereosinophilic syndrome

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Last Updated: Apr 6, 2026

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Identification and Characterization of Immunogenic RNA Species in HDM Allergens that Modulate Eosinophilic Lung Inflammation

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Methodology for Sputum Induction and Laboratory Processing

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Published on: December 17, 2017

Area of Science:

Pulmonology
Hematology
Immunology

Background:

Lung disease with peripheral blood eosinophilia is uncommon but clinically significant.
Management often involves long-term systemic corticosteroids.
Non-response to oral steroids suggests a potential malignant etiology.

Purpose of the Study:

To review the clinical significance and management of lung disease associated with peripheral blood eosinophilia.
To highlight the emerging role of antieosinophil therapies.

Main Methods:

Literature review of cases and treatment outcomes for eosinophilic lung disease.
Discussion of current and novel therapeutic strategies.

Main Results:

Eosinophilic lung disease is typically managed with systemic corticosteroids.
Failure to respond to steroids may indicate malignancy.
Antieosinophil therapies, especially those targeting interleukin 5, are a promising development.

Conclusions:

Eosinophilic lung disease requires careful diagnosis and management.
Novel antieosinophil therapies offer a potential alternative to long-term steroid use, aiming to reduce side effects and comorbidities.