Causes of Allergies | Causes Of Food, Drugs, Insect Allergy

There are many reasons why a person may be prone to allergies. Sometimes a person may have allergies due to heredity, while at other times, a person may be prone to allergies simply because of how their body reacts to certain substances. A lot of substances can trigger allergy attacks and here are some of the more popularly known ones:

• Pollen and Other Airborne Allergens. Airborne allergens are often those substances that cause an allergic reaction to occur once a person comes in contact with these substances through the air. They can either breathe these substances in or have these substances land on their skin from the air.
• Food and Other Ingested Allergens. Food is another common source of allergies for people. Most of the people who are known to have allergies to food often include shellfish, seafood, eggs, milk, and nuts as the cause of allergic reactions.
• Drugs and Medication. This allergen can be confusing sometimes since a lot of drugs do have certain side effects that can be easily be seen as an allergic reaction or the other way around.
• Insect Bites. Some people may get a little itch or a small swollen area when bitten by a particular insect but those who have allergies to certain insect bites or stings often experience extreme reactions to such bites, indicating that they are allergic to such an insect bite.