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What is a scotoma?

Migraine aura often includes a blind spot or area in one side of the field of vision, known as a scotoma. Although scotomas usually appear black, in migraine they are typically gray, or, in rare cases, colored. The scotoma typically appears as a shimmering zigzag in the shape of a crescent that moves across one side of a person's field of vision. Visual auras typically last about 20 minutes and are often but not always followed by headache and the other typical features of migraine.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.