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The term allergy may be used to describe the reaction produced by the body when it encounters something foreign. When an allergic reaction occurs, the body responds by producing antibodies and/or releasing specific chemicals called histamines. When released into the system, these histamines trigger an inflammatory response otherwise known as an allergic reaction. Common allergens include certain drugs, dusts, moulds, insect bites, plants and foods.
The body must first make contact with an allergen before developing sensitivity and an allergic reaction towards it. The most common allergy symptoms experienced include:
Common allergens include:
Allergies may develop at any time, from within the womb, in childhood or even adulthood. Some however seem more susceptible in developing them more so than others, as these people produce more IgE than those who are not allergic. This has been attributed by science to genetics, claiming allergies to in fact be a hereditary condition.
Whilst the body as a whole can be affected by an allergic reaction, the lungs, skin, stomach, nose and eyes are significantly more prone to them. Common allergic conditions include:
Allergic Conjunctivitis occurs as an allergic reaction which inflames tissue layers that line the undersurface of the eyelid and cover the eyeball surface. Symptoms include watery, itchy eyes; redness of the eye and under the lids and eye membrane swelling.
This condition is often triggered by seasonal changes and their accompanying fluctuating levels of pollen. Symptoms include a runny nose, sneezing, nasal itching, nasal congestion, itchy ears and a post-nasal drip (which may cause a scratchy throat). Allergic Rhinitis is also caused by indoor allergens such as moulds, dust mites and animal dander that when inhaled may cause tissue (mucous membrane) inflammation inside the nose.
Allergic Eczema can be defined as an allergic rash that often accompanies allergic rhinitis or asthma. Symptoms may include a dry, red, itchy face; rashes around the eyes, behind the knees and in elbow creases; rashes elsewhere on the face (which is especially common in children).
This type of allergic shock can be life-threatening and requires immediate medical attention as symptoms progress quickly affecting a number of internal organs simultaneously as they do. This type of reaction usually takes place when the allergen is either injected or eaten (as with a bee sting or peanut). Symptoms include Hives, nasal congestion, throat swelling, stomach pain/nausea/vomiting, low blood pressure, shock, wheezing and/or shortness of breath.
Asthma may be defined as a breathing difficulty that is caused by inflammation and spasm of the bronchial passages (bronchial tubes). This in turn narrows the air passages which restricts airflow in and out of the lungs. The condition is often triggered by allergens, but not always. Symptoms include wheezing, coughing, shortness of breath and a tightness in the chest.
Hives are an allergic skin reaction commonly caused by certain medications or foods. They also occur in non-allergic people for other reasons. Other symptoms include intense itching and raised red welts on any part of the body.
For more information, please see natural treatments for allergies’ Natural Treatments for Allergies.
Topic: Conditions, Allergies