Glossary
Definitions of medical terms used in our articles.
Nocturia
Nocturia means waking from sleep to urinate. One trip can be normal; two or more nightly often signals an underlying pattern worth understanding.
Overactive bladder (OAB)
Overactive bladder is a pattern of urgency, often with daytime frequency and nighttime waking. Here is what it means and what tends to help.
Post-void residual (PVR)
Post-void residual is the urine left in the bladder right after you finish urinating. Measured by ultrasound or catheter, it tells a clinician how completely the bladder empties.
Urinary frequency
Urinary frequency is going to the bathroom more often than typical, usually defined as 8 or more daytime voids. Here is what counts and what tends to drive it.
Urinary urgency
Urgency is a sudden, hard-to-defer need to urinate. It is the most diagnostic symptom of overactive bladder and the symptom most likely to interfere with daily life.
This article is for educational purposes only. It does not provide medical advice, diagnosis, or treatment. Always consult a qualified health professional regarding any medical condition.