Allergen

An allergen is a harmless substance that causes an allergic reaction.

Allergens include: 

• pollen
• pollenpet hair
• dust mites
• food (e.g. fruit, nuts, milk and eggs)
• mould spores
• medicine (penicillin)
• insect bites/stings

Those affected by allergens can develop an allergic reaction. Common symptoms of an allergic reaction may include:

• sneezing
• a runny or blocked nose
• dry and/or red skin
• hives (red rash)
• wheezing
• shortness of breath
• a cough.