• What is Asthma?
• Highlights
• Causes
• Risk Factors
• Prognosis
• Symptoms
• Diagnosis

Introduction

The word asthma originates from an ancient Greek word meaning panting. Essentially, asthma is an inflammatory lung condition that makes it difficult to breathe properly.

When people inhale, the air travels through the following structures:

• Air passes into the lungs and flows through progressively smaller airways called bronchi and then bronchioles. The lungs contain millions of these airways.
• All bronchioles lead to alveoli, which are microscopic sacs where oxygen is taken in and...