Blood serum concentrations are much lowerâonly about 0.4% of the body's potassium is found in blood serum. As noted above, hypokalemia can be caused by the sudden uptake of potassium ions from the bloodstream by muscle or other organs or by an overall depletion of the body's potassium.
Early symptoms of the flu may include conditions such as excessive or sudden fatigue or body aches and chills, according to Healthline. While fatigue can be an early symptom of a cold, in people who have the flu, the fatigue is much worse.
Causes of Flu-like symptoms (Flu-like illness): See detailed list of causes below. Flu-like symptoms (medical symptom): Symptoms similar to flu including fever Introduction: Flu-like illness . Flu-like symptoms (medical symptom): Flu-like symptoms appear like the flu (see symptoms of flu), which tends to be more severe than the similar cold-like symptoms. Flu-like symptoms may include fever, shivering, chills, malaise, dry cough, loss of appetite, and body aches.