As the weather warms up and we spend more time outside, it’s important for people with asthma to be mindful of the subtle seasonal triggers that might set off their symptoms. Ahead of World Asthma Day (May 5), we spoke to Karen Spillett, deputy head of health advice at Asthma + Lung UK , who has outlined five key summer asthma triggers to be aware of, and has also shared an abundance of useful tips on how to manage them. 1. Hot weather “Warmer weather can cause people’s airways to narrow, which can bring on asthma symptoms such as coughing and shortness of breath,” says Spillett. 2. Thunderstorms Thunderstorms can also trigger your asthma, causing asthma attacks and making symptoms like breathlessness, wheezing and coughing worse, according to Asthma + Lung UK’s website, which is sometimes called thunderstorm asthma. “This doesn’t affect everyone with asthma, but it’s important to be aware of it,” says Spillett.…