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.
Symptoms. Early meningitis symptoms may mimic the flu (influenza). Symptoms may develop over several hours or over a few days. Possible signs and symptoms in anyone older than the age of 2 include: Sudden high fever; Stiff neck; Severe headache that seems different than normal; Headache with nausea or vomiting; Confusion or difficulty concentrating; Seizures