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Related Concept Videos

Allergic Reactions02:06

Allergic Reactions

Overview
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...
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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,...
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Related Experiment Video

Updated: Jun 20, 2026

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

Messages from the Aalst Allergy Study.

Dirk Van Gysel1, Elke Govaere, Katia M C Verhamme

  • 1Department of Pediatrics, O.L.Vrouw Hospital, Aalst, Belgium. dirk.van.gysel@olvz-aalst.be

World Journal of Pediatrics : WJP
|August 21, 2009
PubMed
Summary
This summary is machine-generated.

This Belgian study found that age, gender, BMI, bedroom environment, and pet exposure significantly influence allergic sensitization and symptoms in children. These factors highlight the complexity of allergy development.

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Area of Science:

  • Pediatric Allergy and Immunology
  • Environmental Health
  • Epidemiology

Background:

  • Global rise in sensitization and allergic diseases necessitates understanding contributing factors.
  • The
  • Aalst Allergy Study
  • aimed to assess allergy prevalence and influences in Belgian children.

Purpose of the Study:

  • Document prevalences of allergic sensitization and symptoms in a Belgian pediatric cohort.
  • Evaluate personal and environmental factors impacting allergy development.

Main Methods:

  • Cross-sectional study of 2021 Belgian schoolchildren (3.4–14.8 years).
  • Skin prick testing for common aeroallergens.
  • Parental questionnaires on allergic symptoms and risk factors.

Main Results:

  • Prevalence of sensitization and allergic diseases (eczema, asthma, rhinoconjunctivitis) aligns with literature.
  • Significant association between sensitization and allergic symptoms found in children aged 6 years and older.
  • Age, gender, BMI, bedroom environment, and pet exposure significantly associated with sensitization and symptoms.

Conclusions:

  • Study confirms existing data on allergy and sensitization prevalences.
  • Highlights the intricate interplay of factors in allergy development.
  • Disease subtypes and factor interactions complicate the understanding of causative elements.