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What are allergies?

Your body's immune system helps keep you healthy by producing disease-fighting antibodies. These antibodies can destroy harmful foreign substances like viruses and bacteria that cause disease. But if you have an allergy, these antibodies get overstimulated and your body reacts when it comes into contact with a normally harmless substance. The air we breathe. The food we eat. The things we touch. They can all trigger an allergic reaction.

When we think of allergy we usually think of upper respiratory irritations such as sniffling, sneezing, and an itchy or runny nose. But these conditions shouldn’t automatically send you to the drugstore for allergy medicine. Some diseases that affect the upper respiratory system are not allergy-related. The only way to be sure is to get tested. Even if it turns out that you don’t have an allergy, your doctor will have a valuable piece of evidence to help diagnose your condition accurately.

Para leer más en español sobre la diagnosis de alergia y opciones de pruebas, pulse aquí.