Sometimes, the immune system can start to defend against things that wouldn't normally cause harm to the body, this is what causes allergies and allergic reactions to take place.What Causes an Allergic Reaction?No one is completely sure why some people have allergies while others do not, however doctors do believe them to mostly be passed down in families.
If you have a close family member who has allergies, you may be more likely to develop them yourself.
While the exact cause of allergies is unknown, some things are known to commonly cause allergies in people.
Some of those things are: Pet dander, for example from a dog or a catBites or stings from certain insects like ants or beesCertain foods like nuts or shellfish can cause food allergies or food intoleranceMedications like penicillin can cause people to have drug allergiesPollen, mold and dust mitesThere are many more things that can cause someone to have an allergic reaction, and an allergist will be able to tell you exactly what is causing your allergies by giving you an allergy test.
How do I know if I'm Having an Allergic Reaction?There are many different symptoms that could arise from an allergic reaction, and they can vary from mild to severe.
These symptoms may continue to become more severe the more often you are exposed to the allergen.