What causes allergies?
What causes allergies is a question that may frequently occur to those of us who have allergies and who often have their activities and life constrained by those allergies. An allergy is a hypersensitivity disorder of the immune system. To put it simply, the body overreacts to harmless substances, perceiving them to be harmful.
Many kinds of foods, dust, pollen, medications, dander from pets and other animals and insect bites are usually not inimical to the body. But those who have an allergy to any of these substances are unable to tolerate these ‘allergens’ and produce reactions that could range from the mild to the severe. The body mistakenly produces the reaction that it would normally have to harmful bacteria and viruses.
What causes allergies may differ from person to person – the triggers, allergens, the kind of allergic reactions and their severity and so on. Also allergies can show a predictable pattern at times. For instance it a person is allergic to peanuts, there is a higher likelihood that they may be allergic to other nuts as well.
Medical conditions can be causes for allergies
Click to learn more about causes of allergies.