What is an allergy, allergy manifestations
What is an allergy, allergy manifestations? Allergy is a reaction of an organism to a particular substance, the so-called allergen. Allergies can be various substances - from the simplest (like bromine, iodine), to substances of more complex protein and non-proteinaceous. Some medicines may cause allergies.
Allergens that enter our body fromEnvironment, can be both infectious and non-infectious. Viruses and products of their interaction with tissues, as well as microbes belong to allergens of an infectious nature. Allergies that are caused by animal hair, drugs, house dust, chemicals, and certain foods that are not infectious.
Not everyone develops an allergy, evenIf it comes into contact with an allergen. Predisposition to it is inherited. If one of the parents suffers from this disease, then 50% of the cases show a predisposition to the disease in children. Negative vision, brain injury, disruption of the endocrine and nervous system predispose to the development of allergies.
Causes and manifestations of allergy
Many manifestations of allergies occur in generalA number of diseases. Urticaria, rheumatism, bronchial asthma, contact dermatitis and others are diseases that are based on allergies. Often some allergic diseases are combined with allergic diathesis. With the action of auto-allergens, more severe allergic diseases develop: hematopoietic allergy, lupus erythematosus, some forms of bleeding, eye and thyroid damage. Allergic contact dermatitis occurs, most often, due to skin diseases, in the development of which the allergic component is leading. It occurs that during the main process of the disease allergic reactions are layered, especially if the disease is infectious.
Allergy manifestations are different. The defeat of the skin of an inflammatory nature that arises from the effects of an allergen (drugs, food) is called allergotoxicoderma. Antibiotics (streptomycin, tetracycline) B vitamins, sulfanilamide preparations (norsulfazole, sulfadimethoxin and others) are the most frequent sign of the manifestation of drug-related toxic infections.
In people with the most severe sensitivity, toSuch food products as strawberries, strawberries, crayfish, some varieties of fish and others, develop elementary (food) toxiccoderms. They are often accompanied by gastrointestinal disorders, fever, and appear as blisters and blemishes. Treatment of drug toxicoderma, in most cases, has a positive result. But sometimes it can occur with repeated medications severe allergic reactions with internal organs, severe damage to the mucous membrane and skin. In such cases, intensive care is provided to patients.
When re-exposure to allergens on the skinAllergic contact dermatitis develops. Allergens can be chemical compounds (varnishes, paints, turpentine, synthetic glue, epoxy resins and others), medicines (semisynthetic antibiotics, ampicillin and others), insecticides, as well as synthetic agents. True eczema, by external signs, resembles allergic contact dermatitis. Allergies can manifest as a nodular and bladder rash, swelling, redness of the skin, erosion. If a secondary infection joins, then grayish-yellow crusts appear, itching, burning, feeling of heat.
The reaction of the body to a particular allergen can beCheck with allergic skin test. To prove allergic dermatitis with industrial allergens, mandatory tests are performed. Allergic dermatitis can develop into eczema if contact with the allergen continues for a long time.
A variety of causes can cause hives. There may be an external cause (allergic contact dermatitis) and internal (allergotoxicoderma). When external stimuli usually appear blisters. Maybe with insect bites, nettle burns and other contacts.
Prevention of allergies
Unfortunately, easy preventive measures againstAllergies have not yet been invented. In the prevention of allergic diseases, all human contact with allergens should be completely ruled out. When it comes to food, chemicals are not difficult to do. And when the allergy is caused by external components of the environment (pollen, dust, cold, poplar fluff) this is much more difficult. Also, immediately treat a disease that can lead to allergies. At the first signs of an allergy should consult a doctor.