Hi my grandfather is having involuntary muscle movement of the left side of his body, where he makes slow paced sort of jerky motions. His fingers and toes on left side are slightly hyperextended, he has excess tounge movements, is unable to keep eye contact for long, he tends to look all over the place, and he has a slightly elevetated heart rate around 98-102 bpm any clue to what may be wrong with him?