hyperactivity
n.n. a state of being very active, energetic, or restless. It often describes a child who has a lot of energy and cannot sit still for long.
n. a state of excessive physical or mental activity, often characterized by restlessness and an inability to remain seated. Frequently used in clinical contexts to describe a neurodevelopmental condition.
The doctor checked for signs of hyperactivity in the child.
The teacher noticed that the student's hyperactivity made it difficult for him to focus during quiet reading time.
While some children exhibit hyperactivity as a natural part of their development, persistent and severe symptoms may indicate a need for professional intervention to manage attention and behavior.
From hyper- + activity.