I have TD. I got it from the short time I was on Abilify. Whatever stats I've read about it I've forgotten. I can tell you the main risk is to women over 60 taking Abilify. Weird. I'm one of those women......figures. TD is rare and I had to diagnose myself. I kept reporting the odd tremors and sensations to my pdoc but he didn't recognize it; he had never seen it. My symptoms have since disappeared, except for the worst one. It's near constant movement of my tongue against the back of my teeth. It only stops during sleep. I'm distracted during the day but when I'm on my laptop or waiting to fall asleep, it's crazy-making. It's not visible to others but it has caused my perfect lower teeth to shift. I have just invested heavily in Invisalign to straighten them again. I thought for sure my dentist or orthodontist would have heard of it but neither did either. For what it's worth my neurologist told me it might go away but we both knew he was grasping at straws. I'm stuck with this......good luck to you.