Excessive urination, or urinary frequency, can be divided into subcategories. The first would be related to an increase in total volume of urine produces (also known as polyuria). Second, there can be dysfunction in voiding whereby there are problems with the storage and emptying of urine. Finally, there may be urinary incontinence in which there is involuntary loss of urine. Urinary frequency is often associated with other symptoms like
- painful urination (dysuria),
- blood in the urine (hematuria), or
- an urgent need to urinate when it is the result of a urinary tract infection.
Frequent urination may be a symptom of diabetes or can result from medications, such as diuretics. If urinary frequency occurs at night, it may be referred to as nocturia (having to urinate at night). Many pregnant women also experienced an increased need to urinate.
Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.
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Other Causes of Frequent Urination
Increased Urinary Volume:
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- Diabetes Insipidus (Nephrogenic)
- Diabetes Mellitus (Type 1 or Type 2)
- Excessive Intake of a High Solute Load (Such As Mannitol Therapy in the Hospital, or Use of Radiocontrast Materials for Radiology Procedures)
- Salt Wasting Kidney Diseases (Such As Bartter Syndrome)
- Excessive Fluid Intake
- Use of Diuretics
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- Neurogenic Bladders
- Prostate Hypertrophy
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Medications (Both Prescription and Nonprescription)