Hypokalemia “Understanding Low potassium levels in the blood” Hypokalemia is a condition that occurs when there is too little potassium in the blood. This can be caused by various factors, including diuretic (loop) use, eating disorder, water intoxication, vomiting, and diarrhea. Symptoms of hypokalemia include 6 Ls L-Lethargy L-Leg cramps L-Limp muscles L-Low, shallow respirations L-Lethal cardiac dysrythmias L-Lots of urine (polyuria) In severe cases, hypokalemia can lead to respiratory failur