People get allergies from coming into contact with allergens. Allergens can be inhaled, eaten, or injected (from stings or medicine) or they can come into contact with the skin.
Common allergens include:- Pollens from trees, grasses and weeds
- Molds (both indoor and outdoor)
- Dust mites that live in bedding, carpeting and other items that hold moisture
- Animal dander from furry animals such as cats, dogs, horses, and rabbits
- Some foods and medicines
- Venom from insect stings
