There are a wide range of other migraine aura symptoms that extend beyond visual aura and sensory aura. These symptoms may at first seem to be unrelated to the migraine attack, but after keeping a detailed history of each migraine attack in your migraine journal it is much easier to determine which symptoms are due to the migraine attack.
Migraine aura symptoms typically occur before the head pain begins, in the prodrome period. These symptoms are considered a warning sign that the migraine attack is on its way, usually within an hour – although a small number of people experience migraine aura without head pain.
The most common migraine aura symptoms are vision changes and visual disturbances such as seeing flashing lights, or blurry vision, or seeing odd shapes and colors caused by visual aura. In fact, more than 90 percent of migraine auras involve visual symptoms, which can include the illusion of seeing halos or having blind spots. Some people see jagged lights in their peripheral vision, while others may see rainbows.