Allergen immunotherapy and allergic rhinitis: false beliefs

Area of Science:

• Allergy and Immunology
• Otolaryngology

Background:

• Persistent misconceptions surround allergen immunotherapy for allergic rhinitis.
• Historically, complex allergen extracts were used in diverse patient populations.

Purpose of the Study:

• To review evidence countering seven common misconceptions about allergen immunotherapy.
• To highlight the efficacy and safety of modern allergen immunotherapy.

Main Methods:

• Review of evidence from large-scale epidemiological surveys.
• Analysis of data from double-blind, placebo-controlled, randomized clinical trials.
• Examination of findings from meta-analyses and systematic reviews.

Main Results:

• Allergic rhinitis symptoms are often severe and impact daily life.
• Allergen immunotherapy shows greater efficacy in more severe disease.
• Evidence strongly supports the efficacy of allergen immunotherapy, including sublingual forms.
• Symptom relief can occur within weeks to months.
• Therapy demonstrates sustained efficacy and disease modification post-treatment.
• Polysensitization is not a contraindication; immunotherapy is effective.
• Sublingual allergen immunotherapy is safe for home use.

Conclusions:

• Modern evidence refutes historical misconceptions about allergen immunotherapy.
• Allergen immunotherapy is an effective, evidence-based treatment for allergic rhinitis.