Overactive bladder and nocturia: what to know

Nocturia is waking from sleep to pass urine. Overactive bladder can create a sudden, difficult-to-delay urge, sometimes with urine leakage. Night waking may also be influenced by evening drinks, caffeine, medicines that increase urine production, sleep problems, diabetes, or a urinary infection. A night-time pattern alone does not establish the cause.

Note when you drink, when you urinate, the strength of the urge, and whether there is burning, leakage, or a large amount of urine. This record helps a clinician separate bladder storage symptoms from increased urine production.

Keep fluids steady through the day rather than drinking a large amount close to bedtime. Reduce evening caffeine and alcohol if they worsen urgency, and empty your bladder before sleep. Do not sharply restrict fluids, because concentrated urine can irritate the bladder.

Bladder training can gradually lengthen the time between planned toilet visits; learn more about [Bladder Training](/treatments/pelvic-floor-and-rehabilitation/bladder-training/). If symptoms remain troublesome, a clinician may review medicines, check urine, and decide whether [Urodynamic Testing](/treatments/diagnostics-and-imaging/urodynamic-testing/) would clarify bladder function. Support is also available for [Leaking Urine](/symptoms/leaking-urine/).

Arrange a clinical review if night waking continues, is worsening, causes falls or marked daytime tiredness, or comes with urgency or leakage that limits normal activities. Seek prompt care for fever, back or side pain, blood in the urine, painful urination, vomiting, or inability to pass urine. These features can point to a problem needing timely assessment.

Ask: Could my night-time urination be caused by bladder urgency, increased urine production, a medicine, or a sleep problem? Should I keep a bladder diary? Do I need a urine test or [Urodynamic Testing](/treatments/diagnostics-and-imaging/urodynamic-testing/)? Which fluid changes and [Bladder Training](/treatments/pelvic-floor-and-rehabilitation/bladder-training/) exercises fit my symptoms?