Potassium in serum helps maintain homeostasis. Low (hypokalemia) or high potassium (hyperkalemia) can lead to threatening symptoms. Potassium ions are essential for muscle contraction. In patients with episodes of low blood potassium, muscles may cease to function voluntarily, resulting in paralysis. However, not all paralysis is due to periodic paralysis. The article below will clarify the symptoms of individuals with potassium deficiency.