The migraine generator revisited: continuous scanning of the migraine cycle over 30 days and three spontaneous attacks

Recent research explored brain activity during migraines using advanced imaging techniques. Specifically, positron emission tomography and functional magnetic resonance imaging were utilized. The study identified a brainstem area known as the 'migraine generator'. This area activates during migraine attacks but not outside them. However, the role of the hypothalamus is also significant. Typical migraine symptoms include fatigue and yawning, linking them to the hypothalamus. This study monitored a migraine patient over 30 days. Daily morning magnetic resonance imaging captured three complete untreated migraine attacks. Findings revealed changes in hypothalamic activity before pain onset. The study showed increased activity in the hypothalamus during the 24 hours leading to an attack. Additionally, the hypothalamus had altered connections with other brain regions during attacks. This suggests that the hypothalamus may play a crucial role in migraine biology, alongside the brainstem. Clinical relevance: This research indicates that migraine mechanisms may involve hypothalamic activity and connectivity changes, which could enhance treatment strategies.