What are the symptoms of hyperkalemia (high serum potassium level)?

Updated: Apr 09, 2020
  • Author: Eleanor Lederer, MD, FASN; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Many individuals with hyperkalemia are asymptomatic. When present, symptoms are nonspecific and predominantly related to muscular or cardiac function. Weakness and fatigue are the most common complaints. Occasionally, patients may report the following:

  • Frank muscle paralysis
  • Dyspnea
  • Palpitations
  • Chest pain
  • Nausea or vomiting
  • Paresthesias

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