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Why do people have seasonal allergies? - Eleanor Nelsen

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18,155 Questions Answered

TEDEd Animation

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Ah, spring. Grass growing, flowers blooming, trees budding. For those with allergies, though, this explosion of new life probably inspires more dread than joy. So what’s behind this annual onslaught of mucus? Eleanor Nelsen explains what happens when your immune system goes rogue.

In severe cases, an allergic reaction can cause:

About TED-Ed Animations

TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

  • Educator Eleanor Nelsen
  • Director Lisa LaBracio
  • Animator Kaitlyn Carroll
  • Sound Designer Weston Fonger
  • Narrator Addison Anderson

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