Allergies occur when our body overreacts to a 'trigger' or allergen. Common reactions include itchiness, sneezing and difficulty breathing. Anaphylaxis is a severe reaction that requires emergency treatment. Common allergies include hay fever, asthma, hives and food allergy.
Topic: Introduction to allergies
Allergy occurs when the body overreacts to a 'trigger' that is harmless to most people.
Allergy testing is used to find which substances provoke an allergic reaction.
Anaphylaxis is a severe allergic reaction that requires urgent medical attention.