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Medical Author: Melissa Conrad Stöppler, MD
Normal urine is clear and has a straw-yellow color. When the urine does not have its characteristic clear appearance, it is often referred to as cloudy, turbid, or foamy urine. Cloudy or foamy urine may occur occasionally due to mild dehydration; when it occurs in the absence of symptoms and goes away rapidly, it is usually of little consequence. Certain conditions can cause excess protein or crystalline substances in the urine, causing it to persistently appear cloudy or foamy. Infections anywhere in the urinary tract can cause blood and pus to appear in the urine, giving it a cloudy appearance. Additionally, many of the numerous causes of blood in the urine can yield a cloudy or murky appearance to the urine due to the presence of blood. In women with vaginitis (such as yeast vaginitis), the vaginal discharge may sometimes contaminate the urine sample, making the urine appear cloudy.
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Fauci, Anthony S., et al. Harrison's Principles of Internal Medicine. 17th ed. United States: McGraw-Hill Professional, 2008.
Causes of Cloudy Urine
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In This ArticleDehydration Article
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- Dehydration pictures
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In This ArticleInterstitial Cystitis (IC) Article
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- Overview of urinary function
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- What is the cause of interstitial cystitis?
- What are interstitial cystitis symptoms and signs?
- How is interstitial cystitis diagnosed?
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- Are lifestyle modifications of value in the management of interstitial cystitis?
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- What is the prognosis (outcome) of interstitial cystitis?
In This ArticleProstatitis (Inflammation of the Prostate Gland) Article
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- Prostatitis definition
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In This ArticleUrinary Tract Infections (UTIs) Article
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In This ArticleVaginitis Article
- Vaginitis facts
- What is vaginitis?
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- What are the risk factors for vaginitis?
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Other Causes of Cloudy Urine
- Bladder Stones
- Calcium Pyrophosphate Crystals
- Goodpasture's Syndrome
- Nephrotic Syndrome
- Retrograde Ejaculation
- Uric Acid Crystals (Hyperuricemia)
Examples of Medications for Cloudy Urine
- amoxicillin, Amoxil, Dispermox (Discontinued), Trimox, Moxatag, Larotid
- ciprofloxacin, Cipro, Cipro XR, Proquin XR
- nitrofurantoin, Macrodantin, Furadantin, Macrobid
- norfloxacin, Noroxin
- sulfamethoxazole and trimethoprim, Bactrim, Septra
- trimethoprim, Trimpex (Discontinued Brand), Proloprim (Discontinued Brand), Primsol
- trovafloxacin mesylate, Trovan
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