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TO DUST MITE
Allergies are characterised by an excessive and specific reaction of the immune system to particular substances that are foreign to the body.
These are referred to as allergens.
Though harmless to the majority of the population, allergens can provoke allergic reactions in hypersensitive individuals.
The most common symptoms associated with dust mite allergy are a blocked and/or runny nose, irritated and/or stinging eyes, asthma and eczema, etc. (also see symptoms graphic).
It goes without saying that these symptoms have an impact on quality of life and can lead, in turn, to other consequences such as sleeping desorders, reduced productivity and increased absenteeism, etc.
In children, the lack of sleep has an effect on memory and concentration. Children who are allergic to dust mites therefor often experience difficulties at school.
The last twenty years have seen a large increase in the number of people allergic to dust mites especially in industrialised countries. Various factors, such as the use of central heating, double-glazed windows, thermal insulation, daily showers and frequent baths, etc., have all contributed to an increase in both the humidity and the temperature found inside our houses, as well as reducing the frequency of air exchange between the indoors and the exterior. This has led to conditions conducive to an increase in dust mites which reproduce better in moist and warm atmospheres.
Furthermore, allergies also have a hereditary component. If one of the two parents is allergic, it is estimated that the child will stand a 10% to 40% chance of being allergic; if both parents are allergic, the child will stand a 40% to 80% chance of being allergic.