Under allergic hypersensitivity is commonly understood or the wrong body's reaction to substances of different nature, which, in general, have to be safe for humans.In the 21st century this disease was fairly widespread.According to statistics, approximately every third person on our planet is familiar with allergies.However, most of them - the children.Symptoms of allergies can manifest itself in different ways.This is explained by the fact that different stimuli penetrate the human body quite different ways.Thus, for example, through the throat and nose fall volatile substances such as pollen, dust, germs and so forth.Fall through the skin such substances that can cause allergies, as cosmetics or detergents.Through the mouth and digestive system can penetrate and cause a reaction medicines, some liquids and food.Intravenously or subcutaneously by allergens can come in the form of vaccines, drugs, venom from insect bites.
The most common allergy symptoms are observed on the part of the gastrointestinal tract, skin, and respiratory tract.The reaction may occur at the same time immediately, that is, almost immediately after the exposure to an irritant or after several hours or days (slow).However, there is a statement that is itself a reaction immediately begins to develop.Thus, the slow response suggests that not immediately appear only outward signs of allergy, not the disease itself.
immediate reaction can be expressed by asthma, eczema, hives, hay fever, rhinitis, serum sickness, anaphylactic shock, conjunctivitis, angioedema.In practice, often allergy symptoms manifested not one, but several.Thus, for example, hay fever often accompanies urticaria.Diathesis, sneezing and runny nose - the most common signs of allergies in children, who are also almost always found at the same time.Among the most dangerous type of immediate reaction may be noted swelling Kvnike.In most cases, it occurs after a bee sting, wasp, or any other insect.If angioedema affects the face, occipital region and neck, the victim may have suffered a fatal choking.
Any of immediate type reactions, it is desirable to eliminate as quickly as possible.As for angioedema, the corrective actions must be regarded as a truly urgent.Among the delayed allergic reactions separate item necessary to select a group of cytotoxic reactions.This type of allergy is particularly dangerous, since in these reactions begin to break down blood cells, which in turn can lead to hemolytic anemia or leukopenia.Cytotoxic reaction is rather difficult to diagnose.The reason is that in most cases people do not correlate the appearance of bruises on the body of new blood vessels and bleeding eyes with a possible use of nutritional or medicinal allergens.
Talking about the various symptoms of allergies, can not dwell in detail on the description of such diseases as asthma.It is a chronic disease of the airways characterized by their increased irritability and sensitivity.Symptoms of asthma are expressed by attacks of breathlessness, accompanied by coughing and rattling.It is worth mentioning that most of these are the signs of having an allergy to cats or other pets.Therefore, in order to prevent the exacerbation of asthma is best to simply avoid contact with allergens.
