With Huntington’s Disease the dysfunction of your brain is not having the ability for it to work right, it’s not able to correspond with other parts of the brain that control all functions of your body, mind and soul.
Let’s compare the brains processing center to a large elevator with two sets of doors like in a big hotel or better yet, a large casino; people ,brain activity, gets on at the lobby area of each floor, with their intended destination, original commands given at the front of the brain. As the elevator ascends and or descends something doesn’t happen right and the control to open the elevator door to exit is not working. Now you have more brain activity , or people getting on at each level , the elevator becomes over filled and without the ability to properly balance people getting off the elevator, quickly exceeding the neurological weight limit of sanity. Or another example, the door to the exit opens but doesn’t not close, so instead of brain activity going to where you may have wanted it to go, it is forced off on the wrong floor in your brain, causing extra inappropriate brain activity; functions , via feelings, movements and actions.
Rotten Apples and Eating Around the Bugs 
Well put. My wife, though, is finding that aggressive physical and occupational therapy empowers her to start shoving back to keep things in place as they wait for the right floor and the open door. It doesn’t always work, but it does help a lot. Might even be regrowing gray matter, according to some recent scientific studies. Small, but hopeful.
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