What is allergy?
An allergy is the excessive reaction of the organism to certain external substances. It takes place when cells in contact with the allergy-producing substance (allergen) produce histamine that causes the adverse reaction.
It is contact with the allergen that causes the development of antibodies in excessive amounts in some individuals. When the body has already developed many antibodies, if contacted again with the substance, it causes a disproportionate reaction in the allergic patient.
It is an immune system disease which in normal circumstances, protects us from attacks by bacteria and microbes, but in other circumstances and in certain individuals, reacts inappropriately to certain substances which, for most people are safe.
Symptoms of allergy
Causes of allergy
Different types from allergy exist according to the agent what causes them (See “types of allergy” in the listing above)
Diagnosis and treatment of allergy
If you have an allergic reaction or a symptom that can assume this is some kind of allergy, the first thing to do is visit the specialist to identify the causative factor of this pathology. This is especially required when the reactions are so severe that they pose significant breathing difficulties, seizures, heart problems or severe decreases in blood pressure with significant nausea or vomiting, it might be the most important allergic reaction and dangerous for the life of affected, known as anaphylaxis or anaphylactic shock.
It is necessary to avoid the attacks, whenever it is possible, to avoid those elements that produce such reaction.
More information about allergies.