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Allergy Relief / Allergies / Allergic Reaction Causes
Allergic Reaction Causes
Almost anything can trigger an allergic reaction.
- The body's immune system has a patrol of white blood cells, which produce antibodies.
- When the body is exposed to an antigen, a complex set of reactions begins.
- The white blood cells produce an antibody specific to that antigen. This is called "sensitization."
- The job of the antibodies is to detect and destroy substances that cause disease and sickness. In allergic reactions, the antibody is called immunoglobulin E, or IgE.
- This antibody promotes production and release of chemicals and hormones called "mediators."
- Histamine is one well-known mediator.
- Mediators have effects on local tissue and organs in addition to activating more white blood cell defenders. It is these effects that cause the symptoms of the reaction.
- If the release of the mediators is sudden or extensive, the allergic reaction may also be sudden and severe.
- Your allergic reactions are unique to you. For example, your body may have learned to be allergic to poison ivy from repeated exposure.
- Most people are aware of their particular allergy triggers and reactions.
- Certain foods, vaccines and medications, latex rubber, aspirin, shellfish, dust, pollen, mold, animal dander, and poison ivy are famous allergens.
- Bee stings, fire ant stings, penicillin, and peanuts are known for causing dramatic reactions that can be serious and involve the whole body.
- Minor injuries, hot or cold temperatures, exercise, or even emotions may be triggers.
- Often, the specific allergen cannot be identified unless you have had a similar reaction in the past.
- Allergies and the tendency to have allergic reactions run in some families. You may have allergies even if they do not run in your family.
- Many people who have one trigger tend to have other triggers as well.
- People with certain medical conditions are more likely to have allergic reactions.
From http://www.webmd.com/allergies/guide/allergic-reac
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DISCLAIMER: The information contained in this site is for educational purposes only, and should not be used as a substitute for personal care by a licensed physician. Please see your physician for diagnosis and treatment of any concerning symptoms or medical condition.
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