Nocturia can be a symptom of an underlying disease process or behavioural. The history should not just focus on lower urinary tract symptoms but should also include past medical history, current medications and fluid intake. It is important to ask specifically about the onset and progression of symptoms, and to what extent the patient is troubled by the nocturia. An abdominal examination should always be performed and should exclude urinary retention. A digital rectal examination of the prostate should also be offered.