Fatal familial insomnia is a rare genetic degenerative brain disorder. It is characterized by an inability to sleep (insomnia) that may be initially mild, but progressively worsens, leading to significant physical and mental deterioration and death.
How does it feel to constantly be awake?
Tiresome. Like I just woke up 20 minutes ago after a shit night. I’d say the very closest thing I could compare it to is the first hour of being awake, where your body and brain are never fully turned on.