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Related Concept Videos

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-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-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:
Asthma-III: Symptoms and Complications01:24

Asthma-III: Symptoms and Complications

Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma
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 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,...

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Updated: May 9, 2026

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
14:39

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma

Published on: November 5, 2010

Occupational asthma.

B T Butcher, J E Salvaggio

    The Journal of Allergy and Clinical Immunology
    |October 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    Occupational asthma, a significant respiratory condition, affects many workers. Understanding its prevalence, causes, and developing prevention strategies are crucial for worker health.

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    Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
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    Published on: November 5, 2010

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    Published on: August 25, 2017

    Collection and Extraction of Occupational Air Samples for Analysis of Fungal DNA
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    Collection and Extraction of Occupational Air Samples for Analysis of Fungal DNA

    Published on: May 2, 2018

    Area of Science:

    • Occupational Medicine
    • Pulmonology
    • Environmental Health

    Background:

    • Occupational asthma represents a substantial portion of all asthma cases.
    • Prevalence is highly variable, influenced by individual factors, specific agents, and workplace conditions.
    • The number of workplace asthma-inducing agents is extensive and growing.

    Purpose of the Study:

    • To highlight the significance and variability of occupational asthma.
    • To underscore the need for further research into causative mechanisms and effective interventions.
    • To emphasize the role of environmental controls and product modification in prevention.

    Main Methods:

    • Review of existing literature on occupational asthma.
    • Analysis of factors influencing prevalence and disease progression.
    • Discussion of potential preventive and therapeutic strategies.

    Main Results:

    • Sensitization to an agent can trigger asthma at very low concentrations.
    • Mechanisms underlying occupational asthma are often not fully understood.
    • Long-term outcomes of occupational asthma and bronchial hyperreactivity vary, potentially persisting for decades.

    Conclusions:

    • Further research is needed to understand occupational asthma prevalence and mechanisms.
    • Developing prophylactic or desensitizing measures is a key future direction.
    • Environmental controls, product modification (e.g., MDI vs. TDI), and physician identification are vital for management and prevention.