It can be triggered by a number of factors, including plants, animals, clothing, food and heat. When you are exposed to the offending allergen, your body releases histamine, which is what causes your symptoms.
Even though there are many types of skin allergy, reactions usually take the form of a swelling or a rash. This can affect just small areas of your skin or cover your whole body.
Skin allergies can be itchy, uncomfortable and not very nice to look at, but there are lots of treatments available to relieve your symptoms quickly and effectively.