Causes of allergies
Most researchers of this problem tend to believe that the underlying causes of allergies are certain failures in the adequate functioning of the gastrointestinal system, immune disorders and various infections.
Throughout the day, every person faces more than one hundred food allergens, and usually, without any harm to health. However, with inflammation of the intestine, dysbacteriosis, poor digestion and in case of overeating, the risk of developing an allergic reaction is significantly increased. This suggests that the disease is born when there is a certain gastrointestinal pathology in the body.
Suffering from lachrymation, itching and runny nose, most people do not even guess that the cause of this allergic symptomatology is often hidden in the surrounding everyday everyday household things. An allergen may be a tablet of aspirin, a sprig of green dill or the coat of a cat. All these, like many other allergens, can provoke a hay fever or hay fever, hives, or trigger an attack of a sharp cold.
The listing of all allergens known today is a vain idea, as one person reacts sharply to the pollen of the flower, the other to the chicken's meat, the third to house dust, and in the first two the dust will not cause any allergic reactions due to the fact that the causes of allergy in largely depend on the individual's intolerance to a particular substance.
Allergens that trigger allergic reactions enter the body in various ways - with injections (intravenous, intramuscular, subcutaneous), through the respiratory tract, skin and mouth. Symptomatic of allergic reactions is very diverse, since allergens can damage absolutely any organ. In the painful process, respiratory organs are very often involved, which is manifested by bronchial asthma, inflammation of the paranasal sinuses, an allergic rhinitis. Often there are reactions from the skin, mucous membranes and eyes. The allergic lesions of the gastrointestinal tract ( colitis , allergic gastritis , etc.), nervous system, as well as vessels and heart ( migraine , vasculitis, myocarditis) are observed less frequently.
Allergens are conditionally divided into two groups: autoallergens or endoallergens (formed in the body in case of damage to their own tissues) and exoallergens (enter the body from the outside). Endoallergens, for example, are formed in the case of severe burns, when the subcutaneous tissue and the skin itself change so much that their own organism takes them for foreign tissues, which causes the development of an allergic reaction. Exoallergens are divided into subgroups: pollen; home or household; bacterial allergens; allergens contained in detergents and cosmetics; medicinal allergens.
Household allergens, perhaps, are most widespread. These include household dust, feathers of birds and animal hair, spores of mold fungi, etc. Chitinous covers of various insects, from ordinary butterflies, to cockroaches, flies, lice and bed bugs, have potentially dangerous allergenic properties. Allergy to animal hair is usually selective and increased sensitivity is observed exclusively to one species of animals, but very rarely, but still, there is a so-called polyvalent allergy, manifested by increased sensitivity to several allergens at once. No less severe allergens are the feathers and the fluff of birds, which are often stuffed with feather beds and pillows, thereby causing asthma and skin rash in sensitive people. Doctors in such cases instead of feathers and fluff recommend plant fluff or artificial fillers.
In addition to the feathers and wool of animals, inhalation allergens include airborne microscopic pieces of dandruff and dried saliva of animals. Fungi and their spores also belong to this subgroup of allergens, since they are very light and transported by the wind over very long distances. Getting into the respiratory tract, fungal spores can cause an allergic rhinitis and bronchial asthma
Causes of bacterial allergy
In nature, there are bacterial allergens. For example, a person develops an abscess of the tooth or a purulent chronic inflammation of the middle ear. The microbes that cause this process produce special substances, to which the body reacts with increased sensitivity. This suggests that a person with chronic purulent inflammation of the ear can additionally develop skin eczema and bronchial asthma . From this follows the conclusion - to reduce the risk of developing allergies can be by getting rid of chronic infections
Causes of a drug allergy
It has been experimentally proven and firmly established that acute allergic reactions are capable of causing low-molecular chemical substances, or so-called medicinal allergens. Getting into the body, on the skin and mucous membranes, medicinal substances are able to cause allergic reactions of the antibody-antigen type. On the skin of the patient appear pockets of rash, depending on the distribution and nature of which you can talk about hives, eczema, toxicermy, allergic dermatitis or simple contact dermatitis.
The causes of allergy to medicines are found in general disorders of the organism's reactivity. At the same time, functional disorders of the nervous system can be observed, which are often combined with hormonal disorders. Changes in the reactivity of the organism cause various emotional factors acting as a specific stimulus through the endocrine and nervous systems (fatigue, mental and nerve injuries, etc.), against which allergic reactions occur.
Allergy to medication usually requires a certain amount of time for its development, so it often manifests itself with repeated administration of a drug provoking the given reaction. A more severe and severe reaction occurs in people who have had allergic diseases or eczema in the past. The allergic reaction is manifested by symptoms from the nervous system, internal organs and skin rashes. Often this complex symptom complex is called a medical disease
Causes of food allergy
Sufficiently widespread food allergens are eggs, which some very sensitive people develop skin rashes and often vomiting nausea. In addition, allergies of this species can be caused by the following foods: caviar, seafood, strawberries, chocolate, cheese, milk, etc. Often a person has an increased susceptibility to several foods
Causes of pollen allergy
Pollen allergens are pollen of various flowering plants, trees, bushes, grasses and flowers. Pollen of some flowers and plants is transported to great distances by various insects, and the pollen of others is carried for hundreds of kilometers by the usual wind.
Sometimes, pollinosis ( allergy to pollen ) is truly massive, which can be compared to the flu epidemic. This usually occurs at the end of summer and in autumn during the seasonal flowering of ambrosia. Most pollen allergens affect the respiratory tract and eyes. Somewhat less often, skin rashes develop. Pollen allergens are one of the key causes of allergies
The cause of the child's allergy
The reasons for the development of this type of allergic reaction are many, one of them is the failure of a future mother during the pregnancy hypoallergenic diet. Women expecting a baby are advised to abstain from using classic allergens (coffee, citrus, chocolate, etc.) for the duration of their pregnancy, so that after birth the baby should have no problems. However, not all future mothers for nine months are able to sacrifice their habits and interests for the sake of the future child's health. That's why if during a pregnancy mom ate oranges, eggs and drank coffee, the baby may have an allergy to these products. If a woman's pregnancy has been overshadowed by a disease, and she has been treated for it, for example, with antibiotics, antibodies to this drug will necessarily be transmitted to the fetus
Causes of own allergy
In the body of each person contains allergens of their own organism - endoallergens. Some tissues of the human body (the gray matter of the brain, the tissues of the testes, the thyroid gland and the lens) in the development process from the apparatus responsible for the immunological reactions turned out to be isolated. Because of this, the above-mentioned tissues are a kind of stimuli for immune defense, which leads to the development of antibodies against them.
In addition, in case of damage to body tissues by the inflammatory process, radiation or chemicals, the already altered tissues of the body become allergens, or so-called autoallergens. In this case, the immune system recognizes its own tissues as foreign and produces antibodies against them, which is manifested in the development of an allergic reaction.