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</div><div><span>Fluid imbalance</span></div></div>
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</a><h1 class="with-also" itemprop="name">Fluid imbalance</h1>
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</noscript></div><div class="main"><div id="ency_summary"><p>Every part of your body needs water to function. When you are healthy, your body is able to balance the amount of water that enters or leaves your body.</p><p>A fluid imbalance may occur when you lose more water or fluid than your body can take in. It can also occur when you take in more water or fluid than your body is able to get rid of.</p></div><section><div class="section"><div class="section-header"><div class="section-title"><h2>Causes</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p>Your body is constantly losing water through breathing, sweating, and urinating. If you do not take in enough fluids or water, you become <a test="test" href="./000982.htm">dehydrated</a>.</p><p>Your body may also have a hard time getting rid of fluids. As a result, excess fluid builds up in the body. This is called fluid overload (volume overload). This can lead to edema (excess fluid in the skin and tissues).</p><p>Many medical problems can cause fluid imbalance:</p><ul><li>After surgery, the body often retains large amounts of fluid for several days, causing swelling of the body.</li><li>In people with <a test="test" href="./000158.htm">heart failure</a>, fluid collects in the lungs, liver, blood vessels, and body tissues because the heart does a poor job of pumping it to the kidneys.</li><li>When the kidneys do not work well because of <a test="test" href="./000471.htm">long-term (chronic) kidney disease</a>, the body cannot get rid of unneeded fluids.</li><li>The body may lose too much fluid due to <a test="test" href="./003126.htm">diarrhea</a>, vomiting, severe blood loss, or high fever.</li><li>Lack of a hormone called antidiuretic hormone (ADH) can cause the kidneys to get rid of too much fluid. This results in extreme thirst, dehydration, and chemical imbalance of the blood. </li></ul><p>Often, in people with fluid imbalance, a high or low blood level of sodium or potassium is present as well.</p><p>Medicines can also affect fluid balance. The most common are water pills (diuretics) to treat blood pressure, heart failure, liver disease, or kidney disease.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Treatment</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p>Treatment depends on the specific condition that is causing the fluid imbalance.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>When to Contact a Medical Professional</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>Contact your health care provider if you or your child has signs of dehydration or swelling, in order to prevent more serious complications.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Alternative Names</h2></div><div class="section-button"><button type="submit" aria-controls="section-Alt" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Alt"><p>Water imbalance; Fluid imbalance - dehydration; Fluid buildup; Fluid overload; Volume overload; Loss of fluids; Edema - fluid imbalance; Hyponatremia - fluid imbalance; Hypernatremia - fluid imbalance; Hypokalemia - fluid imbalance; Hyperkalemia - fluid imbalance</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>References</h2></div><div class="section-button"><button type="submit" aria-controls="section-Ref" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Ref"><p>Hall JE, Hall ME. Urine concentration and dilution: regulation of extracellular fluid osmolarity and sodium concentration. In: Hall JE, Hall ME, eds. <em>Guyton and Hall Textbook of Medical Physiology</em>. 14th ed. Philadelphia, PA: Elsevier; 2021:chap 29.</p><p>Kashkouli A, Berl T, Sands JM. Disorders of water metabolism. In: Johnson RJ, Floege J, Tonelli M, eds. <em>Comprehensive Clinical Nephrology</em>. 7th ed. Philadelphia, PA: Elsevier; 2024:chap 9.</p></div></div></section>
<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 11/19/2023</h2></div><div class="section-button"><button type="submit" aria-controls="section-version" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<div id="section-version" class="section-body"><p>Updated by: Jacob Berman, MD, MPH, Clinical Assistant Professor of Medicine, Division of General Internal Medicine, University of Washington School of Medicine, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.</p>
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</div></div></div></section><section><div class="section sec-mb"><div class="section-header"><div class="section-title"><h2>Related MedlinePlus Health Topics</h2></div><div class="section-button"><button type="submit" aria-controls="section-mtp" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div name="Related MedlinePlus Health Topics" class="section-body" id="section-mtp"><ul class="side-nav"><li><a href="https://medlineplus.gov/fluidandelectrolytebalance.html">Fluid and Electrolyte Balance</a></li>
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