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Related Concept Videos

Asthma I: Introduction01:28

Asthma I: Introduction

Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...
Asthma-I: Introduction01:29

Asthma-I: Introduction

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...
Asthma III: Clinical Manifestations01:13

Asthma III: Clinical Manifestations

Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...
Asthma: Pathogenesis and Management01:20

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.
Asthma-II: Pathophysiology and Classification01:26

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:
Drugs Used in Lower Respiratory Disorders: Overview01:17

Drugs Used in Lower Respiratory Disorders: Overview

Lower respiratory tract disorders present challenges that often require skilled and nuanced approaches for effective management. Common ailments, such as asthma and chronic obstructive pulmonary disease (COPD), have prompted the development of intricate treatment strategies involving bronchodilators and anti-inflammatory drugs, each tailored to ease breathing and revitalize the lungs.
Bronchodilators, the first step of respiration enhancement, come in various forms, each with its own mechanism...

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Related Experiment Video

Updated: May 21, 2026

Absorption of Nasal and Bronchial Fluids: Precision Sampling of the Human Respiratory Mucosa and Laboratory Processing of Samples
11:54

Absorption of Nasal and Bronchial Fluids: Precision Sampling of the Human Respiratory Mucosa and Laboratory Processing of Samples

Published on: January 21, 2018

[Respiratory allergens and asthma exacerbation].

C Barnig1, A Casset

  • 1Unité d'asthme et d'allergologie, pôle de pathologie thoracique, hôpitaux universitaires de Strasbourg, BP 426, 67091 Strasbourg cedex, France. Cindy.Barnig@chru-strasbourg.fr

Revue Des Maladies Respiratoires
|June 30, 2012
PubMed
Summary

Allergen exposure, particularly to common environmental triggers like dust mites and pollen, significantly increases the risk of asthma exacerbations. Other factors, such as viral infections, can further elevate this risk.

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Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber
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Related Experiment Videos

Last Updated: May 21, 2026

Absorption of Nasal and Bronchial Fluids: Precision Sampling of the Human Respiratory Mucosa and Laboratory Processing of Samples
11:54

Absorption of Nasal and Bronchial Fluids: Precision Sampling of the Human Respiratory Mucosa and Laboratory Processing of Samples

Published on: January 21, 2018

Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels
05:31

Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels

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Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber
08:47

Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber

Published on: March 3, 2023

Area of Science:

  • Allergy and immunology
  • Respiratory medicine
  • Environmental health

Context:

  • Asthma exacerbations involve worsening respiratory symptoms like dyspnea and wheezing.
  • Epidemiological studies link allergy to asthma exacerbations using criteria like corticosteroid use and hospital admissions.
  • Increased exposure to allergens (house dust mite, pollen, etc.) and sensitization are associated with higher exacerbation risk.

Purpose:

  • To review the relationship between allergen exposure and asthma exacerbations.
  • To evaluate the impact of environmental and occupational allergens on asthma control.

Summary:

  • Evidence indicates allergen exposure is a key risk factor for asthma exacerbations.
  • Sensitization to respiratory allergens heightens the likelihood of asthma attacks.
  • Occupational allergens can trigger asthma exacerbations in the workplace.

Impact:

  • Highlights the critical role of allergen avoidance in asthma management.
  • Underscores the need to consider environmental and occupational exposures in asthma care.
  • Suggests that viral infections may interact with allergen exposure to increase exacerbation risk.