Editing AUA: Overactive Bladder (2019) (section)

=== Nocturia ===

* '''Often due to factors unrelated to OAB, including excessive nighttime urine production (i.e. nocturnal polyuria) and sleep apnea.'''
* '''Differential of nocturia includes nocturnal polyuria, low nocturnal bladder capacity or both.''' 
**'''Nocturnal polyuria'''
***Definition: the production of greater than 20 to 33% of total 24 hour urine output during the period of sleep, which is age-dependent with 20% for younger individuals and 33% for elderly individuals.
***Often associated with sleep disturbances, vascular and/or cardiac disease and other medical conditions
***'''Nocturnal voids are frequently normal or large volume as opposed to the small volume voids commonly observed in nocturia associated with OAB.'''