Migraine is often dismissed as a bad headache, but neurologists say it’s a complex neurological event that unfolds in stages. Long before head pain begins, subtle changes in the brain can trigger early warning signs such as fatigue, irritability, food cravings and poor concentration. This pre-attack phase can start a full day or two before pain strikes, offering an important — and often missed — window to intervene.
For some people, migraines progress into a second phase marked by neurological disturbances known as aura. These can include flashing lights, blind spots, tingling sensations or difficulty speaking. Researchers link these symptoms to a slow-moving wave of altered electrical activity across the brain, which temporarily disrupts normal signaling. Only about one-third of migraine sufferers experience aura, but when it occurs, it signals that deeper brain networks are already involved.
The headache phase that follows is driven by abnormal nerve activation and inflammatory signaling, often accompanied by nausea, light sensitivity and sound intolerance. Even after pain fades, the brain may need days to fully recover, leaving many people drained and foggy. Understanding migraine as a multi-stage neurological process — rather than a single pain event — helps explain why early action, proper recovery and individualized care matter more than simply treating pain once it peaks.
SOURCE:
The Conversation, February 19, 2026