considered one of the major diseases disabilities, allergies afflict more than 40 million people in the US alone. As you know, our immune system protects our body from all types of foreign substances and dangerous microbes, called antigens, such as viruses, bacteria, etc. It does this by producing a substance called an antibody that fights this antigen. The antibodies bind themselves to antigens, which sets off a reaction. This reaction between antibody and antigen trigger a series of events, all designed to protect the body against infection.
The immune system is programmed to ignore harmless substances such as food, pollen, etc. But sometimes mistake these innocuous substances harmful invaders and attacks them as it would antigen by releasing powerful chemicals like histamines, spend them. What happens is that when the body is exposed to allergens, it presents against their offensive attack by administering an antibody called immunoglobulin E (IgE) in their mast cells. Mast cells are prominent sets of immune system cells located in areas where the body comes in contact with the outside world, as the mucous membranes of the eyes and other areas, and the linings of the respiratory and digestive systems. Their role is to guard the body from external influences.
When IgE encounters allergens, it triggers the release of chemicals histamine from mast cells. When histamine it binds itself to the surrounding cells with histamine receptor, the neighboring cells become leaky, causing fluid retention, redness and swelling, which are all symptoms of an allergic reaction. Histamine also trigger pain receptors that cause itchy eyes, nose and throat, all symptoms of allergic rhinitis.
An allergy is a condition in which the body attacks harmless substances such as dust, pollen, food etc and releases antibodies to overpower them. It is out of histamines which produces disagreeable symptoms that are associated with allergies. Allergic reactions are, usually, instantaneous, for example, can break out in a rash, or develop a sneezing fit. People who are allergic to one substance will often find that they are susceptible to a number of other substances.
These bone drugs, called allergens, ranging from dust, pollen, mold, mildew, food, rubber, insect stings and even drugs. The most common food allergens are peanuts are, fish, eggs and milk. Allergy is one of the most common causes of asthma. Allergies can cause irritation, swelling and inflammation of the air route, which causes asthma.
Research estimate that over 20 percent of Americans suffer from some form of allergy, allergy is the main source of chronic diseases in the country.