A patient experiences frequent urination at night. This condition is known as?

Nocturia is the correct term for the condition where a patient experiences frequent urination during the night. This condition can significantly affect a person's sleep quality and may have various underlying causes such as urinary tract infections, diabetes, or bladder conditions.

Understanding different urinary conditions is important. Polyuria refers to the production of an abnormally large volume of urine, typically during the day, rather than specifically at night. Oliguria is defined as a reduced urine output, indicating that the body is not producing enough urine. Anuria denotes an extremely low or absence of urine production, which can be a sign of severe kidney dysfunction.

In contrast, nocturia specifically highlights the symptom of waking during the night to urinate, making it essential to recognize this condition particularly in clinical assessments of patients who report sleep disturbances related to urinary frequency.