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  1. Intrinsic and extrinsic asthma: Causes, symptoms, and treatment

  2. Intrinsic Asthma: Symptoms, Diagnosis, and Treatment - Verywell …

  3. What is the Difference Between Intrinsic and Extrinsic Asthma?

  4. Asthma - Symptoms and causes - Mayo Clinic

  5. Types of Asthma | American Lung Association

  6. Nonallergic (Intrinsic) Asthma: Causes, Symptoms & Treatment

  7. Understanding Asthma Phenotypes, Endotypes, and Mechanisms

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

  9. Intrinsic Asthma: Symptoms, Diagnosis, And Treatment

  10. Pharos : Disease Details - Intrinsic asthma