Do comas have to last long or can they happen for just a night?

So I searched if there are different types and there are. One of them sounds pretty identical to a wee situation I had, except the website says the person in Locked-In syndrome can open their eyes, but I couldn’t, though pretty much everything else was exactly the same. I also don’t completely remember if was at night or closer to the morning but I think I do remember thinking about it at school so it must have been somewhere around 11:30pm - 4am. It was like when an anime MC is put through some mind challenge revolving around some past trauma or something and they can still as if they were awake but they can’t do literally anything with their body, to everyone else they might think they’re dead but no.

Do comas have to last long or can they happen for just a night?
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