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  1. Asthma - Symptoms and causes - Mayo Clinic

    Mar 8, 2025 · Asthma is a condition in which your airways narrow and swell and may produce extra mucus. This can make breathing difficult and trigger coughing, a whistling sound …

  2. Asthma: Types, Causes, Symptoms, Diagnosis & Treatment

    Jun 18, 2025 · Asthma Asthma is a condition that causes your airways to swell, narrow and fill with mucus. This can make it hard to breathe or cause other symptoms, like chest tightness, …

  3. Asthma: Symptoms, Treatment, and More - Healthline

    Jun 17, 2025 · Asthma is an inflammatory disease affecting the airways to the lungs, making breathing difficult and physical activities challenging. Common asthma symptoms include …

  4. Asthma - Wikipedia

    Asthma is a common long-term inflammatory disease of the airways. It is characterized by variable and recurring symptoms and reduced lung function. Symptoms include episodes of …

  5. Asthma and Asthma Attacks Center: Symptoms, Causes, Tests ...

    Asthma can happen to anyone without any risk factors, but it is less likely if there are no risk factors present. Most people with asthma also have allergies that can make them sneeze, …

  6. Asthma - American Lung Association

    Asthma makes breathing difficult for millions of Americans. There is no cure, but it can be managed and treated so you can live a normal, healthy life. Find out how asthma affects the …

  7. Asthma | Asthma | CDC

    Asthma is a disease that affects breathing and the lungs. Asthma can be controlled with medications and avoiding triggers that cause an attack.

  8. Asthma - What Is Asthma? | NHLBI, NIH

    Apr 17, 2024 · Asthma is a chronic (long-term) condition that affects the airways in the lungs. The airways are tubes that carry air in and out of your lungs. If you have asthma, your airways can …

  9. What Causes Asthma and What Triggers an Attack - Verywell Health

    Jan 5, 2026 · Asthma is caused by a combination of factors. People who develop asthma may have a genetic predisposition and react to specific triggers. Learn more here.

  10. Asthma: Causes, Symptoms, and Treatment - WebMD

    Jan 9, 2024 · Asthma is a long-term disease of the lungs. It causes your airways to get inflamed and narrow, which makes it hard to breathe. Severe asthma can cause trouble talking or being …