Introduction: Allergen specific immunotherapy provides effective treatment of allergic rhinitis. Despite its efficacy, it can be signifi­cantly compromised by a possible treatment dissatisfaction of patients.

Aim: To explore determinants and factors of satisfaction with sublingual immunotherapy in patients with allergic rhinitis.

Materials and methods: A total number of 191 patients with allergic rhinitis who completed a three-year course of sublingual im­munotherapy were included in the study. Of these, 76 had house dust mite (HDM) allergy - 42 men (55.26%) and 115 had grass pollen allergy - 63 men (54.78%) (mean age 27.3 years, SD: 6.14). The patients assessed their satisfaction using a visual analog scale. Health- Related Quality of Life was assessed by Rhinoconjunctivitis Quality of Life questionnaire. A visual analog scale was used to determine severity of the allergic rhinitis.

Results: The mean overall satisfaction, compared with that in previous therapy, increased significantly from 4.80 (SD 2.16) to 7.47 (SD 2.05) in the grass pollen allergy group and from 3.42 (SD 2.31) to 7.61 (SD 2.38) in the patients with HDM SLIT (p< 0.001). No relation between satisfaction and sex, type of immunotherapy extracts and duration of the disease was established. A strong correlation was found between satisfaction with treatment and quality of life (R=0.62) and severity of allergic rhinitis (R=0.69) after a three-year course.

Conclusion: The results of this real-life study demonstrated that most patients with allergic rhinitis appeared to be satisfied with a three-year course of sublingual immunotherapy. The study provided evidence that reduction in severity of symptoms and improvement in quality of life could determine satisfaction with treatment.