An allergy is a sensitivity to a certain substance which, in similar quantity, is tolerated by non-allergic people.
The allergen is the specific protein substance that a person is allergic to. The presence of this allergen in the body causes a series of chemical reactions in the immune system which result in individual signs & symptoms.
The tendency to be allergic is inherited; the actual allergy is not inherited.
Sites submitted to the main category should contain a range of information about allergies. Please check to see if your site is better suited to one of the sub-categories before submitting.
Sites submitted must be in English.
Sites selling products should be submitted to http://dmoz.org/Shopping/Health/Conditions_and_Diseases/Allergies/
Anaphylaxis is an acute multi-system severe hypersensitivity reaction. It occur in response to an allergen. Common triggers include insect bites or stings, foods, medication and latex rubber.
Pertaining to allergy associations.
Please submit only sites pertaining to allergy associations to this area.
Food allergies are an immune system disorder that makes it potentially fatal for affected individuals to eat foods that would be considered harmless by most. It is possible to be allergic to practically anything, but most food allergies are to proteins. Statistically most allergic reactions occur from ingesting or inhaling particles from one of the so-called "big eight" foods: peanuts, treenuts, egg, soy, wheat, fish, shellfish and dairy.
Symptoms vary widely from gastrointestinal distress, hives and itching, to more severe reactions such as anaphylaxis, which impairs breathing and/or results in a serious drop in blood pressure and can cause death within minutes of exposure and for several hours afterwards. Type and severity of symptoms cannot be predicted even after an exposure has been observed.
A food allergy is different from a food intolerance. A food intolerance is rarely fatal from a single, casual ingestion, and most usually causes gastrointestinal discomfort. Food allergies are triggered by an IgE antibody buildup which occurs after an initial exposure to the allergen. Subsequent exposure causes the body to release histamine. This can cause swelling of soft tissues, dilation of blood vessels, and fluid leakage from the bloodstream into the tissues. A particular concern is when ingestion inflames tissues in the throat and lungs, blood pressure drops severely, or fluid fills the lungs, potentially leading to death.
Those afflicted with food allergies are also prone to environmental allergies (e.g., pollen, pollution) and are also prone to develop asthma.
This section contains both health-related sites containing technical and medical information about food allergies, as well as non-technical, support sites and sites with information on how to conduct an allergen free lifestyle.
Allergy to natural rubber latex results from the sensitization to proteins found in the sap from the Hevea brasiliensis tree. Natural rubber latex is a common component in medical devices, such as gloves, but it can also be found in consumer products, such as balloons. Over the last 10 years, the FDA has received numerous reports of allergic reactions to products containing natural rubber latex. Some of those reports include irritant dermatitis, allergy to the chemicals used in the processing of natural rubber latex, anaphylactic reactions, and even fatalities.
Sites in this category serve the support needs of people with Allergies or similar conditions.
The sites generally provide relevant information and resources. Many also provide up-to-the-minute news on issues related to health.
Use these sites for educational & support purposes only. They should not be used as a substitute for consultation with your doctor or other health care provider.
This area is about treatments for allergies.
Before submitting your website please read the following:
Please submit only sites or articles that pertain to treatments for persons suffering from allergies.
If your site is selling products they need to be submitted to a Shopping category instead.
Sites about particular allergy medications should be submitted to the Drugs and Medications subcategory in Pharmacy.
Sites offering a particular locally based service to allergy sufferers should consider a Regional category instead.