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An allergy or also known as allergy is an abnormal reaction to certain substances usually occur naturally. If an allergic person is exposed to these substances called allergens immune system gets ready to fight them. Allergens are microscopic protein substances that are common and provoke allergic people to produce antibodies (antibodies). The most common allergy provoking substances are pollen from weeds, grass, flowers and trees, mold and mold fungus, dust mites and pet dander.
Where allergies come from? How did they exist? The earliest reports of allergic diseases is king menstrual in Egypt who was killed by the sting of a wasp at some time between 3640 and 3300 f.Kr .. Since ancient history, Britannicus, son of Roman Emperor Claudius was allergic to horses and rash in his eyes and swelling he could no longer see.
The concept of allergy was originally introduced in 1906 by the Viennese pediatrician Clemens von Pirque. After he noted that some of his patients were hypersensitive to normally innocuous entities such as dust, pollen, or certain foods. Pirque called this phenomenon “allergy” from the Ancient Greek words Allos means “other” and Ergon means “work”. According to history, all kinds of hypersensitivity were classified as allergies, and it was caused by poor or inappropriate immune system.
Scientists believe allergies originated millions of years ago as a way for the human body to get rid of parasites and worms attack. The body fights these factors and other invaders by producing an antibody called immunoglobulin E (IgE) in the intestines and lungs. IgE triggers immune cells to release a number of chemicals, one of which is histamine. Histamine causes hives, watery eyes, sneezing and itching. The more a person is exposed to allergens, the more the body produces IgE usual, allergies often get worse with age.
What causes allergies? Allergies can be caused by just about any topic that you breathe or swallow, or the skin. Today allergies very common and it comes up constantly. They cause annoying symptoms such as runny nose, sneezing, swollen and itchy eyes. They can also trigger other conditions, such as asthma, sinusitis, ear infections and skin rashes. The most common symptoms of allergies, allergic rhinitis, most commonly known as hay fever. These symptoms are similar to those of colds. The difference is, colds run for 7 to 10 days while allergic rhinitis can reduce weeks and moths.
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