Allergy Medical Clinic
Environmental controlmeasures for the house dust mite D.pteronyssinus as atreatment for allergicrhinitis, asthma and eczema.
Many infants, childrenand adults withasthma, rhinitis and eczema are sensitized to the dust mite.
The house dust mite is present in high concentrationin the homes of most patients living in Melbourne.
The hypothesis is that removal of dust mite from the home, and in particular the bedroom,will result in an improvement in the clinical condition.
Currently there are three methods of dustmite reduction for the bedroom: encasement of mattresses pillows and quilts; acaricide treatment of the bedroom;and portable air
filters for the bedroom.
The encasementmethod traps the dustmite inside the soft bedding preventing exposure.
The acaricide method kills the dust mite in the bedroom.
The high efficiency particulate air filters remove the dust miteallergens suspended in the air.
There are commercial providers for all these methods, and one or more may be employed at the same time.
Placebo controlled trials have shown a reduction in dust mite allergen concentrationsfor most methods, but unfortunately there has been no significant improvement in the underlying disease processor symptoms.
A recent review stated that most of the controlled studies were of poor design, and that meta analysis was notpossible.
It also concluded that dust mite bedding coverson their own were unlikely to be effective.
House dust mite avoidance measures for perennialallergic rhinitis: an updated Cochrane systemic review
Nurmatov U et alAllergy 2012; 67; 158-165