Why do I get headaches when the weather changes?

You are not imagining it: weather changes are a documented headache trigger, and barometric pressure drops - the kind that arrive before storms - have the strongest evidence, particularly for migraine. Studies tracking headache diaries against weather data found pressure changes, temperature swings, and high humidity all correlate with attack days in susceptible people. The proposed mechanism: pressure shifts affect the sinuses and the pressure balance around the brain and its blood vessels, which an irritable, migraine-prone nervous system amplifies into pain. NINDS notes migraine attacks are often triggered by environmental changes, and weather sits high on patient trigger lists. You cannot change the forecast, but you can confirm and manage the pattern: log headaches against weather for a month - if storms predict your pain, that is actionable. Keep the other triggers extra steady when pressure is falling - sleep, meals, hydration, and caffeine regularity matter more on trigger-stacked days - and treat early: migraine medication works best at the first sign, not mid-storm. Some people with strong weather patterns ask their doctor about preventive medication for stormy seasons. One calibration: weather is a common self-reported trigger but people also misattribute; the diary separates a real pattern from a memorable coincidence. Pymander is a free AI doctor, 24/7 by text. Describe your weather pattern, and it can help you build the diary and the plan.