Hypokalemia: Symptoms & Signs

Medically Reviewed on 7/25/2020

Hypokalemia is a term that refers to abnormally low levels of potassium in the bloodstream.

Signs and symptoms of hypokalemia may not be present in mild cases. As the potassium level drops further to low levels, symptoms can occur. In this case, symptoms can include

In severe cases of low potassium levels, paralysis and respiratory failure may occur.

Causes of hypokalemia

This is usually caused by conditions that lead to excessive potassium loss through the kidneys or from the gastrointestinal tract. Examples of conditions that can cause hypokalemia include

Some medications can also cause hypokalemia.

Other hypokalemia symptoms and signs


According to the USDA, there is no difference between a “portion” and a “serving.” See Answer

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Jameson, J. Larry, et al. Harrison's Principles of Internal Medicine, 20th Ed. New York: McGraw-Hill Education, 2018.