Nocturia is a common lower urinary tract symptom that mainly affects older people. Nocturia causes excess urination at night and, because of associated night-time rising, can also result in falls and fractures. Nocturia has a range of presentations, therefore it is vital that nurses understand how to assess the condition accurately to provide appropriate treatment. This article examines the effective assessment of nocturia, as well as detailing the various lifestyle treatment options that can be used, such as a targeted reduction of fluid intake, weight loss and altered medication profiles. Medication and surgical options should only be used following a trial of lifestyle interventions.