| A | B |
| acute pain | pain that is felt suddenly from injury, disease, trauma, or surgery |
| chronic pain | pain that continues for a long time (months or years) or occurs off and on; persistent pain |
| circadian rhythm | daily rhythm based on a 24-hour cycle |
| comfor | a state of well-being |
| distraction | to change the person's center of attention |
| enuresis | urinary incontinence in bed at night |
| guided imagery | creating and focusing on an image |
| insomnia | a chronic condition in which a person cannot sleep or stay asleep all night |
| NREM sleep | the phase of sleep when there is no rapid eye movement |
| phantom pain | pain felt in a body part that is no longer there |
| radiating pain | pain felt at the site of tissue damage and in nearby areas |
| REM sleep | the phase of sleep when there is rapid eye movement |