Brutal Allergy Season May Be the Result of the 'Polar Vortex'

This year's long, brutal winter may mean the country's headed for pollen eruption and a harsh allergy season in the spring, doctors say.

The freezing temperatures of the prolonged winter may have delayed the blooming of trees, and now that it's finally warming up, trees are expected to bloom at the same time as grasses, causing a dramatic rise in pollen, allergy experts said.

"People who may have both tree allergies and grass allergies are probably going be doubly impacted, because both of those things are going to be blooming at the same time," said Dr. Lolita McDavid, a pediatrician at University Hospitals Rainbow Babies & Children's Hospital in Cleveland, Ohio