If you've got allergies, you know the drill -- sneezing, wheezing, itching. Know why you get these symptoms? You may be surprised at the answer. Learn about the immune-system mix-up we call an "allergy."
Puppies, pollen, peanuts -- these are common triggers for allergic reactions in kids with wonky immune systems. How could a kitten cause a kid's antibodies to go into overdrive?