Birch pollen allergy symptoms in older adults
Part of Ear, nose & throat, Eyes & vision, Immune system & allergy, Lungs & breathing clinical trials.
This study looks at how older adults (60+) with different histories of birch pollen allergy tolerate nasal exposure to birch pollen. It may help researchers understand why some people lose their allergy symptoms with age.
Summary written for real people, not researchers, by Clin2.
Who can take part
- Age 60 or older and willing to follow the study plan.
- Have a confirmed birch pollen allergy (through a skin prick test or blood test) with symptoms for at least 10 years, OR have a past allergy with no symptoms for the last 3 seasons, OR never had a birch pollen allergy.
- Not have active asthma that requires treatment.
- Not be a current smoker or have quit smoking less than a year ago.
- Not be taking certain allergy medications, corticosteroids, or other drugs that could affect the study results.
- Not have nasal polyps, chronic sinusitis, or significant nasal blockage.
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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