Most studies of this problem are inclined to believe that the underlying causes of allergy - some failures in the adequate functioning of the gastrointestinal system, immune disorders and various infections.
Throughout the day everyone is faced with more than a hundred food allergens, usually, without any harm to health.However, inflammatory bowel overgrowth, poor digestion, and in the case of overeating, the risk of an allergic reaction is much higher.This suggests that the disease originates in the presence of the organism in certain gastrointestinal pathology.
Suffering lacrimation, itching and runny nose, most people are not even aware that the cause of the allergic symptoms are often hidden in the human daily household things.Allergen may make aspirin, a sprig of dill or cat fur.All these, and many other allergens can trigger hay fever, or hay fever, hives, or provoke an attack of acute rhinitis.
enumeration of all known in our time of allergens would be futile stunt,
cause allergic reactions allergens enter the body in different ways - when injections (intravenous, intramuscular, subcutaneous), via the respiratory tract, skin and mouth.Symptoms of allergic reactions is very diverse, as allergens can damage absolutely any body.The painful process often involved the respiratory system, which is manifested with bronchial asthma, inflammation of the sinuses, nasal allergies.Often, there are reactions on the part of the skin, mouth and mucous membranes of the eyes.Less frequently observed allergic lesions of the gastrointestinal tract (colitis, allergic gastritis and so on.), Nervous system and blood vessels and heart (migraine, vasculitis, myocarditis).
Allergens conventionally divided into two groups: autoallergens or endoallergeny (formed in the body in the event of damage to its own tissues) and ekzoallergeny (enter the body from the outside).Endoallergeny, for example, are formed in the case of severe burns, when the subcutaneous tissue and the skin itself changed so that their own body takes over the foreign tissue, which becomes the cause of allergic reactions.Ekzoallergeny divided into subgroups: pollen;domestic or household;Bacterial allergens;allergens contained in detergents and cosmetics;drug allergy.
household allergens, perhaps the most widely distributed.These include household dust, feathers and animal dander, mold spores and so on. Potentially dangerous allergenic properties have chitin shells of various insects, butterflies from ordinary and ending with cockroaches, flies, lice and bed bugs.Allergy to animal hair is usually selective and hypersensitivity is observed exclusively to one species of animal, but it is very rare, but nevertheless it occurs so-called polyvalent allergy, manifested by increased sensitivity to multiple allergens.No less powerful allergens are bird feathers and down, which is often stuffed quilts and pillows, thereby causing sensitive people with bronchial asthma and skin rashes.Doctors in such cases, instead of feathers and fluff fluff recommend herbal or artificial fillers.
addition to feathers and fur animals to inhaled allergens include raznosyaschiesya air of microscopic pieces of dandruff and dried saliva of animals.Fungi and their spores also belong to this subgroup of allergens, as they are very light and are carried by wind over long distances.Once in the respiratory tract, fungal spores can cause allergic rhinitis and asthma
cause of bacterial allergy
exist in nature and bacterial allergens.For example, a person has seen the development of tooth abscess or chronic suppurative otitis media.Calling the process microbes secrete a special substance to which the body responds hypersensitivity.This suggests that a person with a chronic purulent inflammation of the ear can further develop a skin eczema and asthma.It follows from this conclusion - to reduce the risk of developing allergies can be achieved by getting rid of chronic infections
reasons for drug allergy
been experimentally proven and firmly established that severe allergic reactions can cause low molecular weight chemicals, or so-called drug allergy.Getting into the body, on the skin and mucous membranes, drugs able to induce an allergic reaction by the antibody-antigen type.On the skin of the patient hotspots rash, depending on the extent and nature of which we can speak of hives, eczema, drug reaction, allergic dermatitis, or a simple contact dermatitis.
Causes allergies to medicines rooted in common violations of reactivity.Simultaneously, there may be functional disorders of the nervous system, which are often combined with hormonal disorders.Changes in the reactivity of the organism causes the action as a specific stimulus via the endocrine and nervous system of a variety of emotional factors (fatigue, mental and neurological injuries and so forth.), On which background and experience an allergic reaction.
allergy medicine is usually for their development requires a certain time, so often manifested in readmission provoking this reaction product.More severe and severe reaction occurs in people who in the past suffered from allergic diseases and eczema.Allergic reactions manifested by symptoms of nervous system, internal organs and skin rashes.Often, this complex syndrome called drug-disease
Causes food allergies
fairly common food allergens - eggs, which are in some very sensitive to them people develop a skin rash, often turning into nausea, vomiting.In addition, the causes of allergy of this kind may include the following products: caviar, seafood, strawberries, chocolate, cheese, milk and so on. Often, the person there is increased susceptibility to several food
cause of allergies to pollen
pollen allergens - itthe pollen of different flowering plants, trees, shrubs, grasses and flowers.Pollen of some flowers and plants are transferred over long distances various insects and other pollen is spread over hundreds of kilometers in the usual wind.
Sometimes hay fever (allergy to pollen) becomes a truly massive scale that is comparable to the flu epidemic.It usually occurs in late summer and fall when ragweed pollen season.The most common allergens are pollen affects the respiratory tract and eyes.Less frequently observed development of skin rashes.Pollen allergy is one of the key causes of allergies
reason allergies in children
reasons for the development of this type of allergic reaction set, one of which is the failure to comply with the future mother during pregnancy hypoallergenic diet.Expecting a baby, doctors advise women to abstain at the time of the pregnancy from the use of classical allergens (coffee, citrus fruits, chocolate, etc.) That after birth the baby had no problems.However, not all expectant mothers for nine months are able to sacrifice their habits and interests for the sake of the health of the unborn child.That is why if the mother during pregnancy eat oranges, eggs and drinking coffee, the baby on these products may show an allergy.If a pregnant woman has been marred by any ailment, and she was treated by her, for example, antibiotics, antibodies to this medication be sure to be passed to the fetus
own reasons for allergy
In every human body contains allergens own body - endoallergeny.Some human tissue (gray matter of the brain, testis, thyroid, and lens) in the development of charge of the immunological reaction apparatus were isolated.Consequently, the above fabric is a kind of protection for the immune stimuli that lead to the production of antibodies against them.
addition, in case of damage to body tissue inflammation, radiation or chemicals, have modified the body's own tissues become allergens, or so-called autoallergenami.In this case, the immune system recognizes its own tissues as foreign and produces antibodies against them, resulting in the development of an allergic reaction.