Shaking lines
Dunlap-Shohl explains that some standard Parkinson’s medications can exacerbate shaking. His hands, his legs, and his entire body stir with vibrations.
Another full-page illustration visualizes the tricks Parkinson’s patients use to steady themselves while walking (see for example, #2., “Throwing Toes,” a kind of pas de deux balancing jig, and #6. “Ragkicker’s Dream,” which advises that the walker kick a cloth.)