Excessive amount of urination means that your body makes larger than normal amounts of urine each day.
An excessive volume of urination for an adult is more than 2.5 liters of urine per day. However, this can vary depending on how much water you drink and what your total body water is.
Polyuria is a fairly common symptom. People often notice the problem when they have to get up during the night to use the bathroom (nocturia).
Some common causes of the problems are:
Less common causes include:
Also, your urine production may increase for 24 hours after having tests that involve injecting a special dye (contrast medium) into your vein during imaging tests such as a CT scan or an MRI scan.
To monitor your urine output, keep a daily record of the following:
Call your doctor if you have excessive urination over several days, and it is not explained by medicines you take or drinking more fluids.
Your health care provider will perform a physical exam and ask questions such as:
Tests that may be done include:
Gerber GS, Brendler CB. Evaluation of the urologic patient: In: Wein AJ, ed. Campbell-Walsh Urology. 10th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 3.
Landry DW, Bazari H. Approach to the patient with renal disease. In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 116.
Ferri FF. Polyuria. In: Ferri’s Clinical Advisor 2014. 1st ed. Philadelphia, Pa: Mosby Elsevier; 2013:section 2.
Updated by: Louis S. Liou, MD, PhD, Chief of Urology, Cambridge Health Alliance, Visiting Assistant Professor of Surgery, Harvard Medical School. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.
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