This year 15 million people fell victim to the symptoms of hayfever . Last year that number is expected to rise by a third to 20 million . Experts told MailOnline warmer weather can result in very high pollen counts which trigger symptoms in new sufferers . High temperatures also increase air pollution , which worsen symptoms .
Last year 15 million people fell victim to the symptoms of hayfever . This year that number is expected to rise by a third to 20 million . Experts told MailOnline warmer weather can result in very high pollen counts which trigger symptoms in new sufferers . High temperatures also increase air pollution , which worsen symptoms .