A changing understanding
A disease of the nervous system
Earlier explanations often focused mainly on changes in blood vessels. Research now supports a broader view: migraine involves altered activity across nerve pathways, brain signaling, and systems that process pain and sensory information. The biology remains under active investigation.
Family history can be relevant, suggesting a genetic contribution, while environmental and other individual factors may also influence when attacks occur. No single cause or pattern explains every person’s experience.
Migraine is more than a bad headache
Head pain is common during migraine, but it is only one possible feature. Pain may be throbbing or pressure-like, affect one or both sides, and worsen with ordinary activity. Some people experience little or no head pain during certain migraine events.
Other possible symptoms include nausea, sensitivity to light or sound, visual disturbances, dizziness, fatigue, difficulty concentrating, tingling, or numbness. The combination, intensity, and sequence can change from one attack to another.
Different patterns need individual assessment
Clinicians describe migraine according to features such as aura, attack frequency, duration, and associated symptoms. Some people have occasional attacks, while others experience symptoms on many days. Learn more about chronic migraine and the broader impact of migraine disease.