Hyperactivity is defined as a condition characterised by overactive, poorly controlled behaviour and lack of concentration. It is most frequently seen in children.
Hyperactivity often occurs alongside or as part of other condtions, such as attention deficit hyperacity disorder (ADHD).
Many people on the autism spectrum are reported to be hyperactive and many are also reported to have other conditions such as ADHD.
Please see Attention Deficit Hyperactivity Disorder