Migraine aura symptoms include temporary visual or other disturbances that usually strike before other migraine symptoms — such as intense head pain, nausea, and sensitivity to light and sound. Migraine aura usually occurs within an hour before head pain begins and generally lasts less than 60 minutes. Sometimes migraine aura occurs without headache, especially in people age 50 and older. Visual signs and symptoms Most people who have migraine with aura develop temporary visual signs and symptoms, which tend to start in the center of the field of vision and spread outward. These might include: 
Blind spots (scotomas), which are sometimes outlined by simple geometric designs
Zigzag lines that gradually float across your field of vision
Shimmering spots or stars
Changes in vision or vision loss
Flashes of light
 Other disturbances Other temporary disturbances sometimes associated with migraine aura include: 
Numbness, typically felt as tingling in one hand or on one side of your face that may spread slowly along a limb
Speech or language difficulty
Muscle weakness
