Why do I see weird shapes when I'm getting sick?

Post date: 2018-01-18 11:13:21

Sometimes when I'm getting sick, one of the first symptoms to manifest is perceiving recurring patterns of weird shapes in motion. Help me understand what's going on.

It doesn't affect my actual vision, it's "inside my head" that I'm seeing it. It's hard for me to describe visually as the shapes are fleeting but one of them is ominous rows of rounded cubish shapes that are constantly combining and splitting into larger and smaller versions of themselves.

I've always associated these visions with a feeling of off-ness and dread, not sure if that's because I usually get a cold or the flu after them or inherent to the visions themselves. Maybe both, I find the shapes themselves a bit unsettling.

It almost always happens at night before bed and the next day I'll wake up feeling ill. It usually only lasts a minute but sometimes will recur over 30 min or so.

Is this some weird form of synesthesia responding to more subtle symptoms? A low fever cooking my visual cortex?

Dunno if it's sleep related, I tend to get sick when I'm short on sleep, but I usually get 6-8 hours a night

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