Question

when allergy happens

Answer 1

when you have allergy or something that bites you which you are allergic to it will swell and become red. If you eat something allergic yourface becomes swollen and red

Answer 2

Allergy reaction can range from mild to severe .in some severe cases allergy can trigger a life -threatening reaction known as anaphylaxis. hey fever also called allergy rhinitis,can cause sneezing