AD/HD, also known as hyperkinetic disorder (HKD) outside of the United States, is estimated to affect 3-7 percent of school-aged children, and seems to afflict boys more often than girls.
First documented in 1902, AD/HD has been called minimal brain dysfunction, hyperkinetic reaction, and attention-deficit disorder (ADD).
Abnormal movements are broadly classified as either hyperkinetic (too much movement) and hypokinetic (too little movement).
The category includes athetoid or choreoathetoid CP; both are hyperkinetic forms of the disease.
M., et al. "Attention-deficit Hyperactivity Disorder and Hyperkinetic Disorder."