/tLdr - have you ever heard of or been informed of the type of movement described in quote below (“elegance and fluidity of motion in the upper extremities”) ?

I was having a lovely fall evening with my girlfriend. She’s a decades-experienced RN. I was telling her a little story about my life, happily riffing on some adventure or circumstance. When I finished the tale, we laughed and looked at it from different angles.

Then she paused, and conveyed an observation. In her years of nursing, occasionally working with folks with MS, she, and other healthcare professionals she knows have come to recognize a modality of expression that she saw me use. As I told my story, rather unconsciously I gesticulated as a part of the telling. She noticed a degree of grace and pleasing form in the movements of my hands and arms.

I asked her to write this sentence to describe in her words what she observes:

“The elegance and fluidity of motion in the upper extremities, especially elbow to fingertips of people that have MS is observable, separate from mobility and/or changes in speech or mentation, leading to the questions of how and where it generates from, and what allows its continuation-even in weakened form- as disease progresses? “

Reddit peeps of the MS persuasion, have you come across such a thing as this? in what form and function ? Is this a superpower?