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A type of migraine headache preceded or accompanied by transient neurological symptoms, most commonly visual disturbances known as an aura. This is often, though inaccurately, referred to as an "ocular migraine."
read more about migraine with aura ...The most common visual aura is a scintillating scotoma, a gradual expansion of a blind spot surrounded by shimmering, zigzag lines or flashing lights.
The aura typically lasts between 5 and 60 minutes and usually occurs before the onset of the head pain. The visual symptoms themselves are temporary and resolve completely.
True "Retinal Migraine" is rare and involves temporary, severe vision loss in only one eye, unlike the binocular (both eyes) symptoms of a classic visual aura.
No. Some individuals experience the visual aura without the subsequent headache (migraine aura without headache).
It is caused by a slow, wave-like spreading of electrical activity across the visual cortex of the brain (Cortical Spreading Depression).
Yes. Any new or sudden visual disturbance, especially if accompanied by a shadow or vision loss, should be evaluated to rule out serious conditions like retinal detachment or TIA/stroke.