Impulsivity and Hyperactivity Symptoms in Adulthood (ADHD)
<keypoints>- In adults, overt hyperactivity often decreases with age and manifests more as internal restlessness and a subjective feeling of being "driven," rather than the obvious physical overactivity seen in children
- Impulsivity in adults refers to hasty decisions or actions taken without thinking through consequences, such as suddenly quitting a job or making rash financial decisions
- DSM-5 requires ≥5 symptoms (rather than 6 for children) of hyperactivity/impulsivity persisting for ≥6 months in adults aged 17+
- The combined presentation (inattention + hyperactivity/impulsivity) is the most common in adults, accounting for ~63.5% of cases
How Hyperactivity Presents in Adults
In children, hyperactivity is typically overt (running, climbing, inability to sit still). In adults, it transforms into more subtle manifestations:
- Fidgeting and restlessness: tapping hands or feet, squirming in seats
- Inner restlessness: a subjective sense of being "on the go" or driven by a motor, even when sitting still
- Difficulty engaging in leisure activities quietly
- Excessive talking: talking at length, dominating conversations
- Difficulty remaining seated in meetings, at a desk, or other situations where staying seated is expected
- Wearing others out with their activity level