Allergies



  • “Allergies occur when your immune system reacts to a foreign substance ~ such as pollen, bee venom or pet dander ~ or to a food that doesn't cause a reaction in most people.”

    -

    Mayo Clinic



RELATED TOPICS



Asthma

Asthma


These videos present topics about asthma, a chronic inflammatory disease of the airway,
View videos
Chronic obstructive pulmonary disease (COPD)

Chronic obstructive pulmonary disease (COPD)


These videos look at chronic obstructive pulmonary disease (COPD), a lung disease that includes chronic bronchitis and emphysema.
View videos