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Asthma (AZ-ma) is a chronic (long-term) lung disease that inflames and narrows the airways. Asthma causes recurring periods of wheezing (a whistling sound when you breathe), chest tightness, shortness of breath, and coughing. The coughing often occurs at night or early in the morning.

Asthma affects people of all ages, but it most often starts during childhood. In the United States, more than 25 million people are known to have asthma. About 7 million of these people ar (More)

Understanding Asthma

  • Asthma Basics Online Learning Module (American Lung Association)
  • Asthma Not Just a Childhood Disease
  • All About Asthma (OSU Medical Center)
  • Controlling Your Asthma
  • Asthma (CDC)
  • Asthma Capitals (AAFA)
  • Asthma: From the NIH (MedlinePlus)
  • What is Asthma? - Video (National Heart Lung and Blood Institute)

  • Commonly Asked Questions

  • Can a Patient Recover from Asthma?
  • Can Asthma Symptoms Begin During Adulthood?
  • Can Home Environmental Factors Cause Asthma?
  • Can Perfume Cause Asthma Symptoms?
  • Do I Need My Asthma Meds All the Time?
  • Does Asthma Accompany Colds?
  • How Do You Treat Cold Induced Asthma?
  • How does Air Quality Affect Asthma?
  • I'm 12 and Have Asthma. Can I Work Out?
  • Peak Flow Meter: What Exactly Does it Measure?
  • (More)

  • Additional Information

  • Symptoms and Tests
  • Treatment
  • Complications
  • The Body
  • Research Studies
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  • Meet Our Experts

    NetWellness Expert John G Mastronarde

    John G Mastronarde, MD
    The Ohio State University

    Last Updated: Oct 02, 2015