Learn How Allergies Work In The Human Body

Many people have experienced reactions to subtle allergies, such as a runny nose or hay fever, which is prompted by airborne particles or dust. This common situation is an example of a mild allergic reaction, but depending on the stimulus and the severity of one’s allergy, an allergic reaction can be fatal.

Much about allergies is understood, and a good deal of study has been put in to the disorder since the early twentieth century. An allergy is simply a problem with the immune system, which prevents it from dealing with specific types of stimuli. Allergies are classified as hypersensitivity disorders, because sufferers are extremely sensitive to whatever they are allergic to.

When one comes in contact with their allergen, specific types of white blood cells become excessively activated, which causes inflammation in an area of the body. As stated, a strong allergy that causes a particularly aggressive allergic response can be deadly if the inflammation is not restrained.

Several different organs can be affected by allergies, including the ears, nose, eyes, skin, and airways. Airway allergies are triggered by airborne particles which are hard to avoid, unlike most other allergens which can be avoided by taking proper precautions. Thankfully, airway allergies are usually not life threatening, although in some cases if they trigger an asthma attack they can be.

Since allergies are so pervasive throughout communities, a variety of procedures have been developed to test for allergies in humans. Many people have either seen or are familiar with skin testing, which involves pricking someone multiple times with needles doused in allergens or allergen extracts.

If one of the needles causes a reaction, then an allergen can be identified. While most subjects are against this form of testing, it is the most accurate, simplest, and cheapest. The other primary testing method is blood analysis.

Like most diseases, allergies are caused by a combination of genetic and environmental factors. People who are predisposed to get allergies by heredity have a higher chance of acquiring them, and external conditions can either further exacerbate the condition or slow it.

Allergies can also arise in people who do not have enough contact with pathogens, which seems contradictory but actually makes sense. The human body, through evolution, has been prepared to consistently fight off germs, and if there are not enough of them to keep the immune system busy, it will resort to attacking harmless microbes.

Once you get an allergy, you are not stuck with it forever. Allergies can be combated with several treatments, which when combined can have a synergistic effect. The most common type of treatment is drugs, which include antihistamines and decongestants. Most of these drugs alleviate the symptoms of the allergy or deter it for a time, but do not cure it. An additional treatment is immunotherapy, which has the goal of eliminating hypersensitivity and thus stopping the allergy.

This can be achieved by consistently applying higher concentrations of the allergen to the patient until they adapt to it, or slowing the production of the antibodies which enable allergies. Immunotherapy of this sort can be administered intravenously or orally. The orally-administered therapy is relatively new, but is already supported by many allergy-specializing doctors, and is referred to as sublingual immunotherapy.