![](https://webarchive.library.unt.edu/eot2008/20081103110316im_/http://www.nci.nih.gov/images/spacer.gif) |
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(HY-per-ak-TIV-ih-tee)
![](https://webarchive.library.unt.edu/eot2008/20081103110316im_/http://www.nci.nih.gov/images/spacer.gif)
| A higher than normal level of activity. Hyperactivity can be used to describe the increased action of a body function, such as hormone production, or behavior. A person who is hyperactive may seem to be always moving or fidgeting, impulsive, unable to concentrate, and talking too much. |
Previous Definitions: | hydroureter, hydroxychloroquine, hydroxymethylglutaryl-coenzyme A reductase inhibitor, hydroxyurea, hygiene | Next Definitions: | hyperalimentation, hyperbaric oxygen, hypercalcemia, hyperfractionated radiation therapy, hyperfractionation |
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