Hyperkalemia

Hyperkalemia is a condition in which the potassium level in the blood becomes higher than normal. Potassium helps muscles, nerves, and the heart work properly, so too much potassium can disrupt normal body function. It often develops when the kidneys cannot remove enough potassium, or when certain medicines, dehydration, or tissue breakdown raise potassium levels. Mild hyperkalemia may cause no clear symptoms, but some people notice weakness, fatigue, nausea, or tingling. More severe cases can lead to dangerous heart rhythm problems, chest discomfort, or even cardiac arrest if not treated quickly. Diagnosis is usually made with a blood test and sometimes an electrocardiogram to check heart activity.

Treatment depends on how high the potassium level is and may include stopping the cause, giving medicines that shift potassium into cells, or using dialysis in serious cases. Because the condition can become life-threatening, early detection and prompt medical care are very important.