Myasthenia Gravis Support Group
Myasthenia gravis (MG) is a neuromuscular disease leading to fluctuating muscle weakness and fatiguability. The hallmark of myasthenia gravis is muscle weakness that increases during periods of activity and improves after periods of rest. Although myasthenia gravis may affect any voluntary muscle, muscles that control eye and eyelid movement, facial expression, and...

A few years ago that was discussed here. It appears some folks have that problem with MG.
https://www.dailystrength.org/group/myasthenia-gravis/discussion/tong_6
I know my tongue got tired and it was hard to talk, chew etc;, so the tongue is affected by MG.
Good Luck
Russ