The number of adults developing hayfever has soared since the 1990s, new research has shown for the first time.
Swedish scientists found that between 1994 and 2009 the proportion of adults reacting to timothy grass - one of the main causes of hayfever - almost doubled from 12% to 21%.
Even adults in their 50s are at risk, with a 10% increase in the proportion having positive skin prick tests for common allergy triggers.
The study is published in the journal Allergy, Asthma and Clinical Immunology.
British specialists say the results mirror anecdotal reports from NHS allergy clinics that the number of older sufferers is rising - and they develop more severe symptoms.
Andrew Williams, a consultant allergy nurse at Homerton Hospital in east London, told Sky News: "When I started most of the patients would be my age or younger.
"But now there is a whole age range. Not just late teens and 20s. We are seeing people having hayfever for the first time in their 40s, 50s and even 60s."
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Swedish scientists found that between 1994 and 2009 the proportion of adults reacting to timothy grass - one of the main causes of hayfever - almost doubled from 12% to 21%.
Even adults in their 50s are at risk, with a 10% increase in the proportion having positive skin prick tests for common allergy triggers.
The study is published in the journal Allergy, Asthma and Clinical Immunology.
British specialists say the results mirror anecdotal reports from NHS allergy clinics that the number of older sufferers is rising - and they develop more severe symptoms.
Andrew Williams, a consultant allergy nurse at Homerton Hospital in east London, told Sky News: "When I started most of the patients would be my age or younger.
"But now there is a whole age range. Not just late teens and 20s. We are seeing people having hayfever for the first time in their 40s, 50s and even 60s."
Yahoo! News UK & Ireland - Latest World News & UK News Headlines