Anaphylaxis is a severe, potentially life-threatening allergic reaction caused by contact with certain foods, medications, insect venom or latex. Anaphylaxis can also be caused by physical exercise.

If you've ever had anaphylaxis (also called an anaphylactic reaction) or you have a history of allergies or asthma, you may have a greater chance of having an anaphylactic reaction. To learn whether you or your child may be at risk of having an anaphylactic reaction, take our risk assessment test.

You can also take our anaphylaxis quiz to see how much you already know about anaphylaxis.