Abstract
The aim of this study was to investigate voice function in patients with birch pollen allergy. Voice recordings for acoustic analysis were performed during pollen season and non-pollen season, with 30 patients and 30 controls, and all participants answered a questionnaire about voice symptoms. The results show that the patients reported more voice symptoms than controls during both seasons. In the non-pollen season the symptoms were decreased in the patient group but not in the controls. Speaking fundamental frequency was lower in patients compared to controls during both seasons. The results suggest chronic edema of the vocal folds in the patients. Laryngeal examination with stroboscope was not performed but is recommended for future patients diagnosed with an air-borne allergy.
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