Fluid imbalanceWater 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
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.
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.
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Hall JE. Urine concentration and dilution: regulation of extracellular fluid osmolarity and sodium concentration. In: Hall JE, ed. Guyton and Hall Textbook of Medical Physiology. 13th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 29.