[StevoRocket]

I get visuals - a small fuzzy spot which gradually grows across the line of vision until its a shimmering kaleidoscope of colour in the shape of a flattened rainbow. No headaches.

I got the first at 12 and thought I was going blind.

I get them infrequently - it could be months or weeks or a year.
There doesn't seem to be any recognisable trigger since I eat drink the same things over time and there is no pattern. They only last for 10 to 15 minutes.

It runs in the family - my brother gets the visuals like I do and so did Dad.

My sister gets severe headaches and speech jumbling and it wipes her out for hours.