Refers to any of the following conditions:
- Frequency (more than 8 voids in each 24 hours)
- Urgency (a powerful urge to urinate, that is difficult to put off)
- Nocturia (waking up twice or more at night to urinate)
- Urge incontinence (leakage of urine associated with an urge to urinate, or not making it to the bathroom in time)