A scotoma that happens before a migraine headache is temporary and usually goes away within an hour. If the scotoma is on the outer edges of your vision, it usually does not cause severe vision problems.

How long will scotoma last?

Symptoms typically appear gradually over 5 to 20 minutes and generally last less than 60 minutes, leading to the headache in classic migraine with aura, or resolving without consequence in acephalgic migraine.

How do you make a scotoma go away?

Typically, scintillating scotomas don't require treatment. In most cases, the blind spot will resolve on its own within about an hour. Lying down to rest, closing your eyes, drinking water, and taking an over-the-counter pain reliever, such as ibuprofen or acetaminophen, may help to relieve mild symptoms of scotomas.