"I Can't Move My Arms and Legs": A Rare Cause of Hypokalemia-Induced Quadriparesis.

Hypokalemia is a relatively common electrolyte abnormality in hospitalized patients. Severe hypokalemia (<2.5 mEq/L) can lead to profound muscle weakness or paralysis, especially in the setting of acute onset of hypokalemia. Multiple mechanisms of hypokalemia have been described, such as decreased potassium intake, increased losses, and increased transcellular shift of potassium. Drugs can rarely cause hypokalemia by one of the above-mentioned mechanisms. Here, we report a case of cocaine use leading to severe hypokalemia manifesting as quadriparesis. The aggressive repletion of potassium led to a complete resolution of muscular weakness.