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Symptoms Before a Migraine - Topic Overview

You may develop subtle symptoms before a migraine headache begins. They may occur before migraines with or without visual and nervous system symptoms (aura).

These symptoms usually develop 24 to 48 hours before the headache starts and may include:

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Ocular Migraine Symptoms and Diagnosis

In 50% of cases, ocular migraines cause temporary and dramatic visual disturbance. In the other half of cases, ocular migraines can cause lesser vision disturbances such as: Blurring Partial vision loss Scotomas, or a blank spots in your vision Dimming Flashes of light Ocular migraines are usually brief, lasting less than five minutes. However, they can last up to 30 minutes. Forty-one percent of people have a headache during the vision loss. Twenty-five percent have it before...

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  • Hunger, thirst, food cravings, or loss of appetite.
  • Mood changes (depression, euphoria or feeling of well-being, or irritability).
  • Changes in energy level (restlessness, sleepiness, excessive energy, nervousness, or calmness).
  • Change in consciousness (drowsiness or hyperalertness).

    This information is produced and provided by the National Cancer Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National Cancer Institute via the Internet web site at http:// cancer .gov or call 1-800-4-CANCER.

    WebMD Medical Reference from Healthwise

    Last Updated: March 12, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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