IV hydration is sometimes used in the treatment of migraine headaches, particularly in the emergency or urgent care setting. Many patients with severe migraines become dehydrated from nausea, vomiting, or reduced fluid intake, which can worsen symptoms. Administering IV fluids helps restore hydration, may improve medication absorption, and can enhance overall symptom relief when combined with other migraine therapies such as antiemetics or pain medications. While hydration alone may not stop a migraine, it is often part of supportive care to speed recovery and improve comfort.