Bronchial Asthma – Causes, Symptoms and Treatment
Bronchial asthma is a chronic inflammatory airway disease characterized by recurring breathlessness, coughing, and wheezing. The airways are persistently inflamed and hypersensitive to various triggers.
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Bronchial asthma is a chronic inflammatory airway disease characterized by recurring breathlessness, coughing, and wheezing. The airways are persistently inflamed and hypersensitive to various triggers.
What Is Bronchial Asthma?
Bronchial asthma is a chronic inflammatory disease of the airways and one of the most common conditions worldwide. It affects people of all ages and is characterized by episodes of breathlessness, coughing, and a whistling or wheezing sound during breathing. The airways of people with asthma are persistently inflamed and hypersensitive. During an asthma attack, the bronchi (the small air passages in the lungs) narrow, making it difficult to breathe, especially when exhaling.
Causes and Triggers
Bronchial asthma typically results from a combination of predisposing factors that increase the risk of developing asthma and triggering factors that provoke individual attacks.
Predisposing Factors
- Genetic predisposition: Asthma often runs in families.
- Allergies: Allergic asthma is the most common form, triggered by pollen, house dust mites, pet dander, or mold.
- Early childhood infections: Respiratory infections in early life may increase the risk of developing asthma.
- Environmental factors: Air pollution, tobacco smoke, and chemical irritants.
Common Triggers
- Allergens (e.g., pollen, pet hair, dust mites)
- Physical exercise (exercise-induced asthma)
- Cold or dry air
- Respiratory infections (e.g., colds, flu)
- Irritants such as cigarette smoke, perfumes, or chemicals
- Emotional stress
- Certain medications (e.g., aspirin, beta-blockers)
Symptoms
The typical symptoms of bronchial asthma often occur in episodes and can vary greatly in severity. The most common symptoms include:
- Shortness of breath (dyspnea), especially when exhaling
- Wheezing and whistling sounds during breathing
- Chest tightness
- Chronic coughing, often worse at night or in the early morning
- Fatigue due to the increased effort of breathing
Severe asthma attacks can be life-threatening and require immediate medical attention.
Diagnosis
The diagnosis of bronchial asthma is based on a combination of medical history, physical examination, and lung function tests.
- Spirometry: Measures airflow and lung capacity to detect airway obstruction (narrowing).
- Reversibility test: If lung function improves significantly after inhaling a bronchodilator, this strongly suggests asthma.
- Peak flow measurement: Measures the maximum speed of exhalation and is used for ongoing monitoring.
- Allergy testing: Skin prick tests or blood tests to identify allergic triggers.
- FeNO measurement: Measurement of fractional exhaled nitric oxide as a marker of airway inflammation.
Treatment
While bronchial asthma cannot currently be cured, it can be well controlled in most cases. The goals of treatment are to prevent attacks, improve quality of life, and avoid permanent lung damage.
Medication Therapy
Treatment is divided into reliever medications (used during an attack) and controller medications (used for long-term management):
- Short-acting beta-2 agonists (SABA): e.g., salbutamol (albuterol) – provide rapid bronchodilation for acute breathlessness.
- Inhaled corticosteroids (ICS): e.g., budesonide or beclometasone – reduce airway inflammation and are the cornerstone of long-term control therapy.
- Long-acting beta-2 agonists (LABA): e.g., formoterol – used in combination with ICS when asthma is not adequately controlled.
- Leukotriene receptor antagonists: e.g., montelukast – have anti-inflammatory effects and are used as add-on therapy.
- Biologics: For severe allergic or eosinophilic asthma, monoclonal antibodies such as omalizumab or mepolizumab may be used.
Non-Pharmacological Measures
- Avoidance of known triggers
- Breathing physiotherapy and patient education programs
- Allergen immunotherapy (desensitization) for allergic asthma
- Smoking cessation and avoidance of secondhand smoke
- Regular physical activity adapted to individual tolerance
References
- Global Initiative for Asthma (GINA) – Global Strategy for Asthma Management and Prevention, 2023. Available at: https://ginasthma.org
- National Heart, Lung, and Blood Institute (NHLBI) – Asthma Guidelines, 2023. Available at: https://www.nhlbi.nih.gov/health-topics/asthma
- World Health Organization (WHO) – Asthma Fact Sheet, 2023. Available at: https://www.who.int/news-room/fact-sheets/detail/asthma
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Related search terms: Bronchial Asthma + Asthma + Bronchial Asthma Disease