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  1. Asthma - Symptoms and causes - Mayo Clinic

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

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

  4. How to Tell If You Have Asthma: Symptoms and Next Steps - Healthline

  5. Asthma - Office on Women's Health

  6. Asthma attack - Symptoms and causes - Mayo Clinic

  7. Asthma Attack Symptoms and Early Signs of Asthma - WebMD

  8. Adult-Onset Asthma Symptoms, Treatments, Causes, Types, and ... - WebMD

  9. Asthma | Asthma Symptoms | Asthma Attack - MedlinePlus