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[Allergy to house dust mites]
B Schnyder1, T Schweri, B Thomann
1Klinik für Rheumatologie und klinische Immunologie/Allergologie, Inselspital, Bern.
Summary
House-dust mite allergies affect 15-20% of Swiss patients with atopic disease, often causing perennial symptoms like rhinitis and asthma. Controlling indoor humidity is key to managing these allergies.
Area of Science:
- Allergy and Immunology
- Environmental Health
Context:
- Atopic disease prevalence in Switzerland is 15-20%.
- 30% of atopic patients experience perennial symptoms.
- House-dust mite allergy is a significant concern, especially in regions with suitable humidity levels.
Purpose:
- To highlight the prevalence and characteristics of house-dust mite allergy in Switzerland.
- To discuss the factors influencing house-dust mite proliferation and regional variation.
- To outline diagnostic methods and therapeutic strategies for house-dust mite allergy.
Summary:
- House-dust mites proliferate when absolute air humidity exceeds 7.0 g/kg.
- Allergy symptoms include rhinitis (50%), asthma (25%), and combined asthma/rhinitis (25%).
- Diagnosis involves patient history, skin prick tests, and provocation tests.
Impact:
- Effective allergen avoidance, primarily by reducing indoor humidity, is crucial.
- Therapeutic options include environmental control, medication (topical corticosteroids), and specific immunotherapy.
- Understanding regional variations in mite prevalence aids targeted prevention and treatment strategies.