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In this article you will find:
  • Who develop the allergy?
  • The immune system
  • Each with each a
  • The process feeds back only
  • Types of allergic diseases
  • Diagnosis and treatment of allergic reactions
Usually the allergy is associated with sneezing, congestion or watery eyes. It is an exaggerated response of the organism to certain substances (allergens) in the environment or to certain foods or drugs.

Who develop the allergy?

10 out of every 100 people inherit from their parents a predisposition to allergies, not the allergy itself, since it depends on the exposure to the factors that lead to raised awareness. If both parents are allergic, there is a greater hereditary factor (70% against 48% in only one of the parents).

The immune system

It is the system that defends the body from the countless substances present in the air we breathe, the food we eat and the things we touch.
Among the most common allergens are: pollen, mold, animal dander, cockroach droppings and dust mites. The antibodies help to capture these invaders undesirable, however, people with allergies have an antibody called Immunoglobulin E , or IgE, that, to the income of the allergens, they produce a series of reactions traveling to the cells, mast cells, which particularly abound in the nose, eyes, lungs and the gastrointestinal tract. The antibodies of IgE adhere to the surface of mast cells and await the particular allergen.

Each with each 

Each type of IgE works with one type of allergen only. This makes a person is allergic to a substance and others do not. If you have more types of IgE, is allergic to most things. When the allergic person comes in contact with the allergens to which it reacts, the IgE captures allergens, initiating the release of “mediators” chemicals (histamine and other agents of the cells, mast cells), which cause the symptoms mentioned at the beginning.

The process feeds back only

Then, these mediators newly released recruit other inflammatory cells to that point, which causes greater inflammation. The chronic allergies have symptoms such as swelling, excess mucus and hyperresponse to stimuli irritating.

Types of allergic diseases

The physical symptoms differ depending on the type of mediator released, and where to act, what that has to do with allergens and exposure to these.
Among the allergic diseases the most important include:
  • Allergic rhinitis or hay fever
  • Allergic conjunctivitis
  • Asthma
  • Atopic Dermatitis
  • Urticaria
  • Severe allergic reactions to substances such as foods, latex, medications and insect stings
  • Sinusitis and otitis media


Diagnosis and treatment of allergic reactions

The doctor will take into account your medical history and perform tests to determine what causes the allergy.
The treatment consists basically in:
  • Indicate the methods that you can use to protect yourself from the allergens
  • To control the symptoms through medications
  • Immunotherapy, which consists of allergy shots, which can modify the immune response to allergens.
In summary, an allergic reaction is a complex chain of events, in which participate many cells, chemicals and tissues throughout the body. Although there is no total cure, it is possible to follow a treatment to relieve the symptoms.

Content developed by pediatrician Peter Barreda.

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