3 ms·

I get these as well, it seems very random. I might have one 3 days in a row, and then not have one for 3 months. About 15 minutes before the shimmering happens,

by mym1990 4y ago

I get these as well, it seems very random. I might have one 3 days in a row, and then not have one for 3 months. About 15 minutes before the shimmering happens, I can already feel that something is off with my vision. The shimmer basically moves left to right/right to left until it dissipates in about 30 minutes to 1 hour. It started in high school, and back then the migraines were the absolute worst pain I had ever experienced. Now they are more or less just normal headaches(sometimes no headache at all even).

Analemma_ 4y ago
Have you checked if there's a correlation with caffeine? I get these too, and like one of the other replies to the parent mentioned, in my case it's definitely connected to drinking too much coffee.
- franga2000 4y ago
  I remember a recent-ish study that found a strong correlation at 3 or more (or was it more than 3?) coffees in a day, but was inconclusive below that amount. I don't know what the unit of coffee was (probably standard espresso) and I unfortunately no longer remember the source. There are a bunch of different triggers though and they vary from person to person. Coffee is one I hear very often. For me, the worst is the combination of at least two of {hunger, dehydration, physical activity}.
- mym1990 4y ago
  Sounds about right, I drink a massive amount of coffee. The weird thing to me is that my routine is pretty consistent, but I get the auras pretty sporadically. I have also heard that dark chocolate can be a trigger, and some other things.
philsnow 4y ago
> About 15 minutes before the shimmering happens, I can already feel that something is off with my vision. I've had only a couple of these in my life, both brought on by stress. For me they've both been preceded by about 15 minutes of a "feeling of impending doom" (which apparently is an actual medical symptom).

Analemma_ 4y ago

Have you checked if there's a correlation with caffeine? I get these too, and like one of the other replies to the parent mentioned, in my case it's definitely connected to drinking too much coffee.

franga2000 4y ago
I remember a recent-ish study that found a strong correlation at 3 or more (or was it more than 3?) coffees in a day, but was inconclusive below that amount. I don't know what the unit of coffee was (probably standard espresso) and I unfortunately no longer remember the source. There are a bunch of different triggers though and they vary from person to person. Coffee is one I hear very often. For me, the worst is the combination of at least two of {hunger, dehydration, physical activity}.
mym1990 4y ago
Sounds about right, I drink a massive amount of coffee. The weird thing to me is that my routine is pretty consistent, but I get the auras pretty sporadically. I have also heard that dark chocolate can be a trigger, and some other things.

philsnow 4y ago

> About 15 minutes before the shimmering happens, I can already feel that something is off with my vision. I've had only a couple of these in my life, both brought on by stress. For me they've both been preceded by about 15 minutes of a "feeling of impending doom" (which apparently is an actual medical symptom).