From The School of Biomedical Sciences Wiki
An allergen is a harmless substance that causes an allergic reaction.
- 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:
- a runny or blocked nose
- dry and/or red skin
- hives (red rash)
- shortness of breath
- a cough
- ↑ NHS. (2012). Allergies -Causes. Available: http://www.nhs.uk/Conditions/Allergies/Pages/Causes.aspx. Last accessed 10th Dec 2012.
- ↑ NHS. Allergies. 2016.[cited 6/12/17].Available from https://www.nhs.uk/conditions/allergies/symptoms/