hyperactivity; overactivity
Refers to excessive activity, often used in medical, psychological, or behavioral contexts.
Symptoms of hyperactivity are observed.
The child is hyperactive and cannot stay still.
多動 is more specifically used in medical diagnoses like ADHD (注意欠陥・多動性障害), while 活動過剰 is a broader term for excessive activity.
Compound of 活動 (activity) and 過剰 (excess).