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  1. Asthma - Symptoms and causes - Mayo Clinic

    Mar 8, 2025 · Find out what can trigger asthma and how to relieve your symptoms and breathe easier.

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

    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, cough and wheezing.

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

    Mar 20, 2026 · Asthma, a persistent respiratory condition, narrows airways, causing breathlessness and difficulty breathing. Explore symptoms, causes, diagnosis, and treatment on WebMD.

  4. 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.

  5. Asthma - World Health Organization (WHO)

    Apr 28, 2026 · WHO factsheet on asthma providing key facts, causes, reducing the burden, prevention and control.

  6. 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 wheezing, coughing, …

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

    Apr 17, 2024 · Asthma is a chronic condition that inflames and narrows the airways in the lungs. Learn about asthma symptoms, attacks, causes, triggers, and treatments.

  8. Asthma | Texas DSHS

    Asthma makes breathing difficult. It’s a long-lasting lung disease and the most common long-lasting disease in children. In fact, nearly 7% of kids in Texas - more than 492,000 - have asthma. 1 …

  9. What Is Asthma? - American Lung Association

    Jan 20, 2026 · Asthma is a lung disease that makes it harder to move air in and out of your lungs. Asthma is chronic, so you live with it every day. Understand what asthma is and how it affects your …

  10. Signs of Controlled and Uncontrolled Asthma - aafa.org

    When you have asthma, it’s important to know what is happening in your airways, common asthma symptoms, when to use your asthma medicines, or when to get emergency help.