If you’re a migraine sufferer, watch out for lightning storms. More than half of people with migraines are sensitive to weather changes – particularly when there are drops in air pressure, and lightning activity. Even the flashes alone can trigger migraines. Scientists say lightning emits electromagnetic waves, produces ozone in the atmosphere, and releases fungal spores… and any one of those things could bring on a migraine. So if you know bad weather is coming your way, take your medication before the first lightning bolt strikes.