Contact allergies are caused because of physical exposure (contact) of the skin with certain media.
Common contact allergies include :
Allergy to shoes (in the form of shoe bites)
Allergy to metals in watches, belts and artificial jewellery
Allergy to perfumes and cosmetics
Allergy to plants etc.
It presents as itchy red rashes or blisters in the area of contact.
Contact allergies are caused because of