Allergies represent a response of the immune system to antigens like certain food, insect stings or even pollen. All of these can easily trigger an allergic reactions. Most allergic reactions are not that serious, the majority disappearing in a couple of days or a week maximum. But there are some allergic reactions that can be very dangerous like anaphylaxis which is a life threatening condition where there is difficulty in breathing and loss in consciousness.

1. Many people have allergic reactions to pets. We all know someone who's allergic to cats or dogs, people who sneeze every time a pet even gets closer to them. I can only imagine how hard this can be for people with allergic reactions. I mean, just think about it, you are allergic to cats so you have to stay 10 feet clear to them to avoid the dreadful sneezing!

And if you didn't know, people aren't bothered by the fur of feathers of the pets, it's the invisible flakes of animal skin that are known as dander that triggers sneezing, watery eyes and stuffy noses in some people who are experiencing allergic reactions to pets.

2. Another very common allergic reaction people have is food allergies, where people are allergic to some foods like peanuts, jalape