Before I answer that one, let me address the question I know is on your mind: How the heck do you pronounce dysdiadochokinesia??? dys·di·ad·o·cho·ki·ne·sia. Don’t worry, I still can’t say it and I don’t know if I really need to know how to say it. It doesn’t sound like my computer’s narrator can say it either! Try it for some fun! So yeah, let’s just focus on what it is. Dysdiadochokinesia is the inability to produce rapidly alternating movements or rapid repetitive movements. This is the result of a lesion in the cerebellum which among other things controls skilled motor activity (such as playing the piano), coordination, and balance.