Pollen Peak Sparks Warning to Asthma and Allergy Sufferers

When ryegrass pollen and rain combine, it can be a deadly combination for asthma and allergy sufferers.

Pheelings media/Shutterstock

Asthma and hay fever sufferers are being reminded to take adequate precautions as the threat of thunderstorm asthma looms.

Thunderstorm asthma is triggered when ryegrass pollen grains are separated by raindrops, leading to easier entry into the airways.