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Sorry to hijack this forum with a non-vestibular problem, but I suspect there's more expertise here than on the migraine forum.
I'm a 73-year-old female, good general health, fairly active, good lifestyle, BMI 24, BP borderline-high but monitored by my GP.
I have no history whatever of classic migraines - i.e. the type with an aura.
This afternoon, while preparing an email, I suddenly noticed a small scotoma in the centre of my visual field, whichever eye I looked through. Not so much a blind spot, more a tiny grey circular spot which it was difficult to see through. It covered about 2mm of text on my screen.
I downloaded an Amsler grid and tested my eyes. Left eye normal, but on the right eye the little blurry spot obscured a couple of mm of the grid just to the right of the central spot. I quit the computer, went off to do something else, to change the focal length.
The grey blurry central spot got bigger over the next 5 minutes - affecting both eyes equally. Then it started changing into a cluster of jagged black lines which appeared to be rotating, still in the centre of my visual field and getting rapidly bigger. It was partly obscuring my central vision though I could kind of see through it.
Shortly afterwards the cluster of jagged lines assumed a half-moon shape and started slowly moving off to the right of centre. It eventually formed a complete semi-circle around the right of my visual field, and looked as if it was rippling, like water. As it moved over to the right, I regained normal central vision but started losing vision in the right field. All this continued to affect both eyes.
It eventually disappeared off the right-hand edge of my visual field, leaving me with normal (for me) vision. The entire episode lasted about 40 minutes.
I had no other symptoms during this episode, apart from feeling a bit panicky. (It was the first time anything like this had ever happened to me.) I grinned at myself in the mirror a couple of times, to check for facial weakness, but there was none.
I checked my sight on the Amsler grid again after the end of the attack - everything OK. This happened five hours ago and I haven't developed a headache or any other symptoms since then.
Would this be a visual migraine? And is it normal for these to start so late in life with no antecedents?
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