Friday, 1 May 2026

🩺 Chapter A – Module 12: Asthma (Chronic Respiratory Disease)

 



🌬️ What is Asthma?

Asthma is a chronic (long-term) inflammatory disease of the airways that affects breathing. It causes the airways to become:

  • Narrow
  • Swollen
  • Sensitive to triggers

This leads to recurring breathing problems.


🧠 Key Symptoms of Asthma

Symptoms can vary in severity and may come and go:

  • Wheezing (whistling sound when breathing)
  • Coughing (often worse at night or early morning)
  • Shortness of breath
  • Chest tightness or pressure
  • Difficulty speaking during severe attacks

⚠️ Causes and Risk Factors

Asthma is caused by a combination of genetic and environmental factors:

🧬 Genetic factors

  • Family history of asthma or allergies

🌍 Environmental factors

  • Air pollution
  • Tobacco smoke
  • Respiratory infections
  • Workplace irritants (occupational asthma)
  • Allergens (pollen, dust mites, pet dander)

🎯 Common Triggers

Asthma symptoms can be triggered by:

  • Cold air or sudden temperature changes
  • Exercise (exercise-induced asthma)
  • Strong emotions or stress
  • Smoke or fumes
  • Mold
  • Viral infections

⏳ Long-Term Nature of Asthma

  • Asthma is usually lifelong (chronic)
  • Symptoms can improve with treatment but may return
  • Some people become symptom-free with good management
  • Without control, it may worsen over time

⚠️ Long-term effects if poorly controlled:

  • Permanent airway narrowing (airway remodelling)
  • Reduced lung function
  • Increased risk of asthma attacks and emergencies

💊 Treatment and Management

Asthma cannot be cured, but it can be well controlled.

🟦 Controller treatment (daily)

  • Prevents inflammation
  • Reduces long-term symptoms

🟧 Reliever treatment (rescue inhaler)

  • Used during attacks
  • Quickly opens airways

🛠️ Additional management

  • Avoid triggers
  • Regular check-ups
  • Allergy management (if relevant)

🚨 When to Seek Emergency Help

Seek urgent medical care if:

  • Breathing becomes very difficult
  • Rescue inhaler does not work
  • You cannot speak in full sentences
  • Lips or face turn blue/grey

🧩 Key Understanding

Asthma is:

  • A long-term inflammatory condition
  • Closely linked to allergies and immune system responses
  • Manageable but potentially serious if untreated

🧠 Summary

✔ Chronic lung condition
✔ Causes breathing difficulties
✔ Triggered by environment + genetics
✔ Controlled with inhalers
✔ Requires long-term management

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📚 TABLE OF CONTENTS (CHAPTER STRUCTURE)

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