One thing that has happened over the past 3 months of lockdown is I've developed quite an irritating twitch in one of my lower eyelids. So naturally, this week - my brain has decided that I am dying and it's 100% something awful. I mean. Could you not?
Are you more stressed than usual? (I laughed typing that out as how could ANYONE not be more stressed than usual in the current circumstances but hey 
)
I get this when I'm stressed and run down. It tends to go away by itself for me so hopefully something similar for you!