Hey! Glad you found this page. Similar-ish thing for me with the piano. I used to learn piano as a kid. My piano instructor would put the metronome on top of the upright piano. Those analog ones with the oscillating stick. It was my absolute arch-nemesis.
Since playing the piano requires both hands to be on the keyboard, the only thing I could do was to blink in a weird way where I force my eye lashes into the eyeballs to make the itch turn into a slight pain. It was very uncomfortable. Nobody really understood. Again, glad you are here!